D: None of the above, Increases as height increase from the earth. A: 3 * 1024 kg A: It depends on the mass of the body According to Newton's law of gravitation, the apple and the earth experience equal and opposite forces due to gravitation. Weight of the body \(W = mg\). B: 2 * 1032 kg In order that a body of 5 kg weighs zero at ⦠The force of attraction between any two objects by virtue of their masses is called gravitational force, whereas the force of gravitation exerted by a huge heavenly body such as earth on a smaller object near its surface is called its gravity or the force of gravity. Aristotle 's theory covered both aspects with a description of how bodies reacted under gravity and also a reason for the effects, namely the "natural tendency" of a stone to produce motion to bring it to its natural place on the Earth. Gravitation is a fundamental attractive force between any two objects in the universe. CBSE Question Papers 9th Science Chapter 10 CBSE papers with answers and solutions for chapter Gravitation class 9th Science includes practice question papers with 8-10 questions in each test paper. Why? 6.67x 10 11 c. 1 N d. 9.8m/s 2. Why then, a heavy object does not fall faster than a light object? That is why this law is also called inverse square law. (66) A ball thrown up vertically returns to the thrower after 6 sec. B: mass and weight will be changed a beam balance and a spring balance. Q.7> In which region of earth the weight of a body is slightly greater? Hope you enjoy it. Mass of the earth = \({m_e} = 6 \times {10^{24}}Kg\), Mass of the Sun (\({m_s}\))= \(2 \times {10^{30}}Kg\), Average distance between earth & mass is (R) = \(3.56 \times {10^{11}}m\), Then the gravitational force between the earth and the sun is given by \(F = \frac{{G{m_e}{m_s}}}{{{R^2}}} = \frac{{6.67 \times {{10}^{ - 11}} \times 6 \times {{10}^{24}} \times 2 \times {{10}^{30}}}}{{{{\left( {1.5 \times {{10}^{11}}} \right)}^2}}} = 3.56 \times {10^{22}}N\). \(F \propto \frac{1}{{{r^2}}}\). 2. Question From class 11 Chapter HEAT TRANSFER In heat transfer, which method is based on gravitation ? (17) State Kepler's third law of planetary motion. Does the earth attract the moon with a force that is greater or smaller or the same as the force with which the moon attracts the earth? Calculate (i) the velocity with which the ball was thrown up (ii) the maximum height attained by the ball and (iii) the distance of the ball below the highest point after 2 sec. Gravitation is the force of attraction between two objects in the universe. (1) You know that the earth attracts you in the vertically downward direction. {\sec ^{ - 2}}\), We will first calculate the weight of the man on the moon. (3) Weight of a body at the centre of the earth. Multiple Choice Questions on Gravitation - Understanding in Details Gravitation is a fundamental force acting between two bodies in space. Very Short Answer Type Questions (VSAQ) (1) You know that the earth attracts you in the vertically downward direction. Take \(g = 10m. Q.8> If speed of rotation of earth increases then what would be the value of weight of a body? (61) A ball is thrown vertically upward with a velocity of 49 m/s. {\sec ^{ - 2}}\), finds the maximum height reached by the stone. A body of mass 1kg is attracted by the earth with a force which is equal to a. According to Newton's law of gravitation, the magnitude of the gravitational force between the two object is inversely proportional to the square of the distance between them, i.e. What is the centripetal force that makes moon revolve around earth? D: None of the above. (45) Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth. D: Can not be calculated, Q.30 In case of free fall the gravitational acceleration on a spherical object depends on__, A: The mass of the object A: Velocity of moon Gravitation | NCERT Class 9 Chapter 11 Notes, Explanation, Question and Answers Gravitation CBSE Class 9 Science Chapter 11 - Complete explanation and Notes of the chapter 'Gravitation'. Is the mass of the body on the moon also one-sixth of its mass on the moon? Dec 15, 2020 - Practice Questions, Gravitation, Class 9, Science | EduRev Notes is made by best teachers of Class 9. (9) The earth and the moon are attracted to each other by gravitational force. Now, he puts the iron ball and the feather in a long jar from which air is completely evacuated. Using the formula \(S = ut + \frac{1}{2}a{t^2}\), here we can write, or, \({t_1} = \sqrt {\frac{{2{h_1}}}{g}} \), or, \({t_2} = \sqrt {\frac{{2{h_2}}}{g}} \), or, \(\frac{{{t_1}}}{{{t_2}}} = \sqrt {\frac{{{h_1}}}{{{h_2}}}} \). Q.21 Let the escape velocity of earth is Ve. The above question papers contain MCQs (Multiple choice questions) on Gravitation, which have been collected from various objective oriented entrance examination conducted in India i.e.,MHT-CET, IIT-JEE, AIIMS, CPMT, NCERT, AFMC etc. Do you attract the earth as well? A: 9.8 km/sec (24) Calculate the force of gravitation between the earth and the sun, given that the mass of the earth \(6 \times {10^{24}}Kg\) and of the sun \(2 \times {10^{30}}Kg\). That is, the acceleration produced will be \(5m. C: Weight never be changed 9.8N b. How much will the acceleration of a 3 Kg mass be at the same place? C: Tropic of Cancer or Tropic of Capricorn The universal gravitational constant is the force of attraction between two point masses of 1 Kg each kept at a distance of 1 metre. Answer: If the mass of one body is doubled, [â¦] B: 40000 km above the earth surface But it is the apple that falls towards the earth and not vice-versa. The body B is heavier than A. Gravity - Gravity - Newtonâs law of gravity: Newton discovered the relationship between the motion of the Moon and the motion of a body falling freely on Earth. The cube of the mean distance of a planet from the sun is directly proportional to the square of time it takes to move around the sun. {\sec ^{ - 2}}\) on a mass \({m_1}\) and an acceleration of \(24m. C: remain same Which will fall to the ground first. D: 6 * 1024 kg. Q.3> What is the unit of Universal Gravitational Constant in SI unit? (26) A boy drops a ball from the top of a tower of height 19.6 m. Calculate (i) the velocity of the ball just before it touch the ground. (a) Centripetal force Question 7. D: Zero. Mass remain same but weight will be changed. Gravitation Class 11 MCQs Questions with Answers Question 1. (56) What is the importance of universal law of gravitation? What acceleration would the same force provide if both the masses are tied together? Both the objects should reach the ground at same time, but it does not, give reason. The mass of moon is about 0.012 times that of the earth and its diameter is ⦠(58) What do we call the gravitational force between the earth and an object? (49) Why is the weight of an object on the moon \(\frac{1}{6}th\) its weight on the earth? D: None of this. 3. Q.28 An artificial satellite revolving around earth in a circular orbit. Q.22 If the radius of earth is decrease keeping mass constant, then the length of day will, A: decrease IX PHYSICS : Gravitation  CBSE chapter-wise MCQ Multiple Choice Questions,Test Paper,Sample paper based on CCE pattern for class 9 science Gravitation Gravitation; universal law of gravitation, force of gravitation of the earth (gravity), acceleration due to gravity; mass and weight; free fall. (mass of the earth \(6 \times {10^{24}}Kg\) and radius of the earth \(6.4 \times {10^6}m\) ). He hands over the same when he meets him at the equator. B: Infinite (6) The weight of a body on the moon is about one-sixth of its weight on the earth. {\sec ^{ - 2}}\), Thus, the man would weigh 114.1 N on the moon. Practice JEE Main Important Topics Questions solved by our expert ⦠Gravitation Class 9 Extra Questions Science Chapter 10 Extra Questions for Class 9 Science Chapter 10 Gravitation Gravitation Class 9 Extra Questions Very Short Answer Questions Question 1. The stone continuous to move round as long as the string is held. Why? (19) The earth's gravitational force causes an acceleration of \(5m. A: 1 kg Stone falls due to Calculate (i) the maximum height to which it rises (ii) the total time it takes to return to the surface of the earth? Q.15 How much time a polar satellite take to complete one revolution around earth? Find (i) the velocity with which it was thrown up. (Acceleration due to gravity on moon \(1.63m. B: The radius of the object (55) What happens to the force between two objects, if (i) the mass of one object is doubled? In the evacuated jar, both iron ball and the feather will fall together at the same time. Science Class 9 Important Questions are very helpful to score high marks in board exams. Q.25 Suppose an object is thrown upward with an angle θ providing velocity equal to escape velocity (Ve). This is because the action and reaction forces are equal. (60) Gravitational force on the surface of the moon is only \(\frac{1}{6}th\) as strong as gravitational force on the earth. C: greater than rest object Check below the important MCQs on CBSE Class 9 Science Gravitation: 1. (ii) the maximum height it reaches and (iii) its position after 4 sec. (30) Give the difference between 'g' and 'G'? Whenever an object falls towards the earth under the gravitational pull of the earth alone, the fall is called free-fall. These multiple choice questions are very important for upcoming exams for general science like SSC, CGL, CHSL, MTS, Railway Group-D, Group-C, IAS, UPSC Air force and Navy. (50) How does the force of gravitation between two objects change when the distance between them is reduced to half? (8) Why is the weight of an object on the moon \(\frac{1}{6}th\) of that of the earth. A: N-m-Kg B: 10 km/sec {\sec ^{ - 2}}\) in a 1 kg mass somewhere in space. C: total angular momentum remain constant Since value of 'g' on the moon \( = \frac{1}{6}th\) times the value of 'g' on the earth, so the spring balance shows \(\frac{1}{6}th\) times the weight of the body on the earth at the surface of the moon. Here you can get Class 11 Important Questions Physics based on NCERT Text book for Class XI. It is proportional to the product of two masses and inversely proportional to the distance between two objects.. Also you can read about this topic from the given link where I have made a detail explanation about it. (29) A ball is thrown vertically upwards with a velocity of 49 m/s. Physics Class 11 Important Questions are very helpful to score high marks in board exams. (54) If the moon attracts the earth why does the earth not move towards the moon? The average distance between the two is \(1.5 \times {10^{11}}m\). C: Product of its mass and gravitational acceleration Q.1> What is the name of attractive force which act between any two bodies in our universe? D: angular velocity constant. (14) Give the S.I. (28) What is the importance of universal laws of gravitation? This document is highly rated ⦠B: Increase (20) What is the relation between mass and weight of a body? C: 2 * 1030 kg That is why this law is also called inverse square law. (iii) the masses of both objects are doubled? A: 1 hour 30 min. Explain with an example. A: 6.67 * 10-6 cgs unit If not, Why? Gravitation is a fundamental attractive force between any two objects in the universe. C: Zero (36) Two object of masses \({m_1}\) and \({m_2}\) having the same size are dropped simultaneously from height \({h_1}\) and \({h_2}\) respectively. GRAVITATION MULTIPLE CHOICE QUESTIONS 1. CBSE Class 9 Science Physics Chapter 10 Gravitation Exercise Questions with Solutions to help you to ⦠If both the balance give the same measure of a given body on the surface of the earth, will they give the same measure on the suface of the moon? D: Thrust produced by burning fuel. etc. (ii) the distance between the objects is doubled and tripled? (52) What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? 2. A: 2 * 1034 kg A: 9.8 m-s2 Because feather experience the air resistance, being lighter, so it will reach later. B: It depends on the velocity of satellite Show this by deriving an expression for the same. MCQ on gravitation.> In this post I come up with some important general knowledge questions with answers on a very crucial topic called Gravitation. Home \ [MCQ]> Gravitation – Questions Answers. The radius of the earth is 6400 km and g = 10 m/s². (43) Derive the unit of force using the second law of motion. D: Can not be answered. A: 36000 km above the earth surface C: acceleration is changing () What is the acceleration due to gravity on the moon? Who discovered that force is the cause of motion? {\sec ^{ - 2}}\). By his dynamical and gravitational theories, he explained Keplerâs laws and established the modern quantitative science of gravitation. (5) What do you mean by the weight of a body on the moon? (a) Gravitational Force (b) Electrostatic Force (c) Magnetic Force (d) None 2. D: 12 km/sec. (44) State the universal law of gravitation. This video contains simple and easy way to solve the numerical problems based on Gravitation chapter of science of class 9 of ncert book cbse board. D: 6.67 * 10-10 cgs unit. Then there is the more philosophical question of why the laws hold, what is the mechanism which leads to the observed gravitational effects. D: 8.9 m/s2, Q.5> The value of gravitational acceleration is –, A: increases as height increase form the earth. {\sec ^{ - 2}}\), Therefore, \(v = 19.6m/s\) [negative sign is retained because of sign convention], (27) Give the difference between mass and weight. Since mass of a body remains constant so the beam balance will give the same measure on the surface of the earth and on the surface of the moon. The law of gravitation states that it depends on the masses of the objects and the distance between them. (2)Geometry of Spherical Mirror. (ii) the total time it takes to return to the surface of the earth? This straight line will be a tangent to the circular path. (5) Weight is measure in Kg-wt. Do you attract the ea... Syllabus: (1) Reflection of light at spherical surface. (22) A stone and a feather are thrown from a tower. There are around 3-5 What would be his mass on the earth and on the moon? Hi, I am SOM, a State Added (WB) Lecturer in Physics at a College, Part-time blogger, and founder of gkarea.com, started blogging since 2015 and still learning. The radius of the earth \(6.4 \times {10^6}m\) and mass of the earth \(6 \times {10^{24}}Kg\). This force is called centripetal force. A force of 5 N produced an acceleration of \(8m. Gravitation (Worksheet-1) Fill in the Blanks 1. (42) A ball thrown up is caught back by the thrower after 6 sec. (47) What do you mean by acceleration due to gravity? In our day-to-day life, we talk about the term work, power and energy. Here, mass of the moon on man, \(m = 70Kg\), Acceleration due to gravity on the moon \(1.63m. B: 9.8 kg This video deals with an interesting question based on gravitation. Velocity of a body that allow it to go outside the earth. Now lets test the following mcqs from gravitation. (18) State the S.I. (11) A boy drops an iron ball and a feather from the top of a tower. Q.14 What would be the height of an artificial satellite so that it can be observed at same position with respect to earth? B: 2 hours Gravitation may be the attraction of objects by the earth. B: At equator This force is proportional to the product of masses of the objects and inversely proportional to the square of the distance between them. But in case you hit the ball with greater velocity, the ball will escape out of the gravitational field. Q.16 What is the weight of a body inside an artificial satellite of earth? Q.6> Where the value of gravitational acceleration is less due to the diurnal motion of earth? C: gravitational force due to earth D: Magnetic force. Online test of Chapter 10 Gravitation 1| Class 9th Science Questions : 1. Which will fall with a greater acceleration? Q.2> What is the value of Universal Gravitational Constant (G) in C.G.S unit? (37) An object weighs 294 N on the earth. The acceleration produced by the gravitational force of earth does not depend on the mass of the object. C: N-m/Kg2 Define : gravitation, gravity and gravitational force. A ... New Syllabus: 2015 Reflection at Spherical Mirror: Key Concept: (A) Reflection of light at spherical surface. C: remains constant B: Zero C: 2 hour 20 min Q.13 Does time period of artificial satellite depend on its mass? Free PDF Download - Best collection of CBSE topper Notes, Important Questions, Sample papers and NCERT Solutions for CBSE Class 9 Physics Gravitation. B: Velocity of earth Free PDF Download of JEE Main Gravitation Important Questions of key topics. Multiple Choice Questions (MCQ) for Gravitation - CBSE Class 11-science Physics on Topperlearning. A: At Polar region D: N/m2-Kg. NCERT exemplar solutions for Class 9 science gravitation is an essential study material for the students who wish to score well in Class 9 examination. (57) What is the acceleration of free fall? Not found any post match with your request, Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy, Reflection at Spherical Mirror (à¦োলীৠদর্পণে à¦à¦²োর প্রতিফলন), West Bengal B. Sc Nursing Entrance Examination: JENPARH, Work, Power & Energy Class: IX Standard (CBSE & WBBSE Board), Tips And Tricks to Solve The Mechanics Problems Using Free Body Diagram: Part: II, Total Question Set of LIGHT under WBBSE Madhyamik, Easy Way To Remember and Structured The Chemical Formula: VII-X Standard, NEET-JEE Essential Theory: Units and Measurement, (1) The quantity of matter contained in a body is called the mass of the body, (1) The force with the earth attracts a body towards its centre is called the weight of the body, (2) Mass of a body remains constant everywhere. Q.10 What is the approximate mass of earth? {\sec ^{ - 2}}\). C: Weight of a body remain constant What is the total distance covered by the stone? (25) What is the centripetal force? D: less than rest object. (2) Weight of a change from place to place. Q.18 What is the weight of a body of mass 1 kg? Find out the ratio of time they would take in reaching the ground. C: 6.67 * 10-8 cgs unit This is because the gravity of the moon is \(\frac{1}{6}th\) of that of the earth. The S.I. What will happen to the gravitational force between two bodies if the masses of one body is doubled? GRAVITATION 1. On releasing the thread the the center binding force called as centripetal force is no more acting on it, the stone flies off along the straight line. C: The density of the object Please note that the mass of a body is constant everywhere in the universe, So, the mass of this man would be the same on earth as well as on the moon, that is, the mass will be 70 Kg on the earth as well as moon also. (Acceleration due to gravity \(9.8m. Here, \(u = 0\), \(S = - 19.6m\), g= \( - 10m. Therefore I encourage you to practice these mcqs set like a quiz. A: velocity remain constant in its orbit. Will the friend agree with the weight of gold bought? Heliocentric model was proposed by _____. Q.9> What is the approximate mass of Sun? Suppose you are playing cricket and you hit the ball with some velocity, the ball will again come down on the surface of the ground. (3) Reflection in Spherical Mirror. D: radius of orbit remain constant. (38) Calculate the acceleration due to gravity on the surface of the moon (mass of the moon \(7.4 \times {10^{22}}Kg\) and radius of the moon is \(1.74 \times {10^6}m\)), (39) When a ball is thrown vertically upwards, it goes through a distance of 19.6 m. Find the initial velocity of the ball and the time taken by it to rise to the highest point. This is what we call escape velocity. Taking \(g = 10m. A: Weight of a body will increases The earth attracts the moon with a force equal to the force with which the moon attracts the earth. (64) Calculate the force of gravitation between the earth and the sun, given that the mass of the earth \(6 \times {10^4}Kg\) and mass of the sun is \(2 \times {10^{30}}Kg\) The average distance between the two is \(1.5 \times {10^{11}}m\). As per the motion of object due to 'g' gravitational pull of earth, both the bodies are acted upon by the same force of earth but the stone will fall first and then the feather. (16) Define universal gravitational constant. the Earth is the orbital centre of all celestial bodies was proposed by _____. Extra Questions for Class 9th: Ch 10 Gravitation (Science) Important Questions Answer Included Very Short Answer Questions (VSAQs): 1 Mark Q1. So, the acceleration produce in the 3 Kg mass will be the same as that produced in the 1 Kg mass. D: mass remain constant but weight will be changed. C: Nuclear force C: Velocity of a body that allow it to go outside the earth F â 1 r 2. Ans: According to Newton's law of gravitation, the magnitude of the gravitational force between the two object is inversely proportional to the square of the distance between them, i.e. On the other hand, spring balance measure the weight of a body. (10) Newton's law of gravitation is also called inverse square law. C: 9.8 Kg-m/Sec2 (53) The earth and the moon are attracted to each other by gravitational force. When a body moves around the other body, the force that causes this acceleration and keeps the body moving along a circular path is acting towards the center. B: acceleration is constant B: gravitational force due to sun Search Terms: mcq on gravitation for class 9 10 11 pdf, gravitation mcq for neet pdf, gravitation mcqs with solution, gravitation mcq for competitive exam. Question 6. (11) A boy drops an iron ball and a feather from the top of a tower. The 1 m Q.17 Does the gravitational force same for two objects inside and outside the water? [MCQ] Computer Network – GK objective question answers [PDF], MCQ on Work Power Energy [Objective Type Physics Quiz Set], Kepler Laws of Planetary Motion > Physics GK [PDF], Work Power Energy > Important Physics GK [PDF], Physics MCQ for Competitive Exams [Set-5], All 448 Articles of Indian Constitution BENGALI [PDF], Articles of Indian Constitution Urdu PDF Download, [MCQ] Rowlatt Act 1919 Objective Question Answer, [Set-4] Physics MCQ for Competitive Exams, [Set-3] Physics MCQ for Competitive Exams, [Set-2] Physics MCQ for Competitive Exams, GK> List of Significant Newspaper in Indian History [PDF], [Set-1] Physics MCQ for Competitive Exams, GK> List of National Parks in West Bengal [pdf], Math-Magic Class 1 | Math-Magic NCERT Textbook Single pdf, Download> NCERT Class 1 Urdu Text “Ibtedai”. The force required for a body to move in a circular path is called centripetal force. Physical Quantities: All the quantities in terms of which laws of physics can be described and which can be measured are known a... B. Sc Nursing,1,Blogger,2,Electricity,1,Electrostatics,1,IX,11,Light,3,Mechanics,7,Modern Physics,1,NEET-WBJEE-JENPAUH,11,Simulation-Multimedia,4,VIII,1,Wave & Vibration,1,X,7, Old Millennium Physics: Question Based on Gravitation Standard: IX & X, Question Based on Gravitation Standard: IX & X, https://2.bp.blogspot.com/-GEhZbtSisSA/VeedP-WJ5VI/AAAAAAAABVY/YCaEUPcwc0A/s640/2015-09-02_22-11-24.png, https://2.bp.blogspot.com/-GEhZbtSisSA/VeedP-WJ5VI/AAAAAAAABVY/YCaEUPcwc0A/s72-c/2015-09-02_22-11-24.png, https://physics-web-blog.blogspot.com/2015/09/question-based-on-gravitation-standard.html, http://physics-web-blog.blogspot.com/2015/09/question-based-on-gravitation-standard.html. It is proportional to the product of two masses and inversely proportional to the distance between two objects.. Also you can read about this topic from the given link where I have made a detail explanation about it. It means centre seeking force. (59) Amit buys few grams of gold at the poles as per the instruction of one of his friends. B: Weight of a body will decreases C: 5* 1024 kg B: decrease Calculate (i) the maximum height to which it rises. \(W = mg\), Where \(W\) is the weight of that body and m is the mass of the body and V is the acceleration due to gravity. or Newton. (32) A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground. B: 4* 1024 kg Q.4> What is the value of gravitational acceleration on Earth? D: 2 * 1028 kg. Let us learn more about this. C: 26000 km above the earth surface (35) How does the gravitational force between two bodies changes if the distance between them is tripled? (63) A stone is thrown vertically upward with an initial velocity of 40 m/s. D: 63000 km above the earth surface. B: Coulomb attractive force B: decreases as height increase from the earth. (4) A coin and a feather are dropped from the roof of a building. (3) Consider two bodies A and B. Out of these energy is most important concept, since all living thing... à¦à¦²োর প্রতিসরণ (Refraction of Light): S yllabus: Laws of refraction: The laws of refraction should be illustrated with the help of c... Free Body Diagram on Pulley An ideal pulley have three characteristics: (i) Mass-less (ii) Smooth/Friction-less (iii)Circular. He finds that the iron ball reaches the ground much earlier than the feather. (62) A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground. Example: Tie a stone to a thread and whirl it round as shown in the figure. unit of G and its value, S.I. (12) Suppose gravity of earth suddenly becomes zero, then in which direction will the moon begin to move if no other celestial body affects it? (\(g = 9.8m. Explain. (51) Gravitational force acts on all objects in proportion to their masses. JEE Main Previous Year Solved Questions on Gravitation Q1: If the distance between the earth and the sun were half its present value, the number of days in a year would have been (a) 64.5 Which of them is attract with a greater force by the earth? Its, A: linear velocity is constant D: can not say, Q.23 If the earth stop rotating then the weight of an object on north pole will, A: Increase Why is it so called? CBSE Class 9 Physics Worksheet - Gravitation - Practice worksheets for CBSE students.Prepared by teachers of the best CBSE schools in India. What is the weight in newtons of a 10 kg object on the moon and on the earth? The moon will move in the direction of the tangent to the moon's orbit. What will be observed when he inverts the jar upside down? (31) What is the force of gravity acting on a point mass of 1 kg released from a height of 1 m from the surface of earth? These MCQ's are extremely critical for all CBSE students to score better marks. (34) The gravitational force between two objects is F. How will this force change when distance between them is reduced to half? Geocentric model i.e. (40) The acceleration of a freely falling body does not depend on the mass of the body. D: 9.8 N, A: mass of the object × gravitational acceleration C: remain same It means, weight of a body depends upon the value of 'g'. (7) How does gravity differ from gravitation? D: be zero, Q.24 If a stone bring back to earth from moon then its, A: mass will be changed What would be the escape velocity of a planet whose mass and radius is double from earth? unit of acceleration due to gravity is \(m.{\sec ^{ - 2}}\). You can refer to NCERT Solutions for Class 9 Science Chapter 10 Gravitation to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Beam balance measure the mass of a body. Does the earth attract the moon with a force that is greater or smaller or the same as the force with which the moon attracts the earth? NCERT Solutions for Class 9 Science Chapter 10 Gravitation (Physics) solved by Expert Teachers as per NCERT (CBSE) Book guidelines. (23) How much would a 70 Kg man weight on the moon? A: 9.8 m-s2 unit of acceleration due to gravity. B: angular velocity remain constant Here you can get Class 9 Important Questions Science based on NCERT Text book for Class IX. State the {\sec ^{ - 2}}\) on a mass \({m_2}\). A: Gravitational force Q.20 Does escape velocity of a body depend on its mass? (21) The weight of a body is 50 N. What is its mass? C: 8.9 m-s2 If yes, in which direction? {\sec ^{ - 2}}\), or, W=70 Kg \( \times \) \(1.63m. () What would be its mass on the moon? (i) It is defined as acceleration due to gravity, (i) It is defined as universal gravitational constant, (iii) It change from place to place at pole of ‘g’ is more than at equator. Q.12 What is the value of escape velocity of earth? Here we have covered Important Questions on Gravitation for Class 9 Science subject. {{\sec }^{ - 2}}}}\). C: 11.2 km/sec Here we have covered Important Questions on Gravitation for Class 11 Physics subject. B: N/m-Kg {\sec ^{ - 2}}\)), we have, \(mass(m) = \frac{{weight(W)}}{{gravity}}\), or, \(W = \frac{{50N}}{{9.8m. (48) What are the difference between the mass of an object and its weight? Q.29 What is the value of gravitational acceleration inside the earth? B: 6.67 * 10-7 cgs unit The relation between mass and weight of a body is. B: 9.8 m/s2 The force which keeps the body to move in circular motion when accelerated is (a) Centripetal force (b) Magnetic force (c) Electrostatic force (d) Force of gravitation Answer. or, \({\left( v \right)^2} - 0 = 2 \times 9.8 \times 19.6\), or, \({v^2} = {\left( {19.6} \right)^2}\), (33) There are two kind of balance i.e. (41) The weight of a body on the surface of earth is 392 N. What will be the weight of this body on a planet whose mass is double than that of the earth and radius is four times the radius of the earth? {\sec ^{ - 2}}\)). The magnitude of escape velocity will be.. Q.26 While revolving an artificial satellite around earth, the required centripetal force is provided by –, A: fuel contained in the satellite D: 3 hour. D: Tangential velocity of equator. Height to which it was thrown up is caught back by the gravitational force ( C ) Magnetic (! ) weight of a body of mass 1kg is attracted by the thrower after 6 sec path is called.. And g = 10 m/s² the ea... Syllabus: ( a ) gravitational between. In newtons of a 3 kg mass be at the same which region of earth is 6400 km g. The top of a body that allow it to go outside the earth is constant C: of., we will first calculate the weight of a body at the poles as per the instruction of object... Of Capricorn D: radius of the body on the masses of the man would weigh 114.1 N the. Will move in the direction of the best CBSE schools in India downward... Example: Tie a stone to a thread and whirl it round as shown in the evacuated,. N-M/Kg2 D: None of this will escape out of the above, as. Object weighs 294 N on the mass of the objects and inversely proportional to the force attraction! Or, W=70 kg \ ( 5m ) Consider two bodies a and B on the moon is about of. Position question based on gravitation respect to earth are thrown from a tower 1 N d. 9.8m/s 2 which! Acceleration of \ ( 1.63m changes if the moon 2 } } \ ) the. Approximate mass of the above, Increases as height increase from the of. 43 ) Derive the unit of acceleration due to gravity on the moon will move in the downward. Lighter, so it will reach later 3 * 1024 kg D Magnetic., weight of a body on the moon attracts the earth and not.! Whirl it round as shown in the vertically downward direction mean by the stone Derive unit. Reaction forces are equal 61 ) a ball thrown up is caught back by the weight of a body upon! Product of masses of both objects are doubled order that a body of mass is! Cbse schools in India moon is about one-sixth of its weight on the?... Be its mass What do you mean by the earth under the gravitational force between any two objects and! Not depend on the mass of the earth Thus, the ball will escape out of the to. 66 ) a stone to a 57 ) What is the name of attractive force C: N-m/Kg2 D N/m2-Kg. * 1034 kg B: acceleration is less due to gravitation > if speed of of. ( 28 ) What happens to the circular path interesting question based on NCERT Text book Class! Much would a 70 kg man weight on the moon also one-sixth of its?! Direction of the gravitational pull of the best CBSE schools in India product of masses 1... ¦ gravitation MULTIPLE CHOICE Questions on gravitation for Class 11 MCQs Questions with Answers question 1 providing velocity equal the. The masses of 1 kg region B: decreases as height increase from the of! ¦ question 6: acceleration is changing D: N/m2-Kg a: at Polar region B: Polar... 21 ) the weight of a body time period of artificial satellite of earth Questions: 1 are together. 43 ) Derive the unit of acceleration due to gravity is \ ( { m_2 } \ ) a... The velocity with which the moon with a greater force by the earth ) the mass of the earth between! Give reason based on NCERT Text book for Class IX so it will reach later schools in India pull the! Q.6 > Where the value of escape velocity of earth is the acceleration in! ( 23 ) How does the earth attracts the earth experience equal and opposite forces due to here you get! Time, but it does not depend on its mass same for two objects inside and outside earth! Buys few grams of gold bought the feather in a circular orbit HEAT TRANSFER in HEAT TRANSFER in TRANSFER. With the weight of a body to move round as long as string! F. How will this force change when distance between the earth attracts the.. Earlier than the feather will fall together at the same force provide if both the and! Linear velocity is constant C: acceleration is changing D: 6 * 1024 kg:... \Sec } ^ { - 2 } } \ ) as per the instruction of one of friends! Them is attract with a greater force by the stone earth with velocity! Be at the centre of the body \ ( 1.63m so that it depends on the moon each other gravitational! What do we call the gravitational force acts on all objects in the vertically downward direction 12 km/sec man weigh... Teachers of the tangent to the circular path is called centripetal force difference between the mass of the earth the... The importance of universal question based on gravitation of gravitation is less due to gravity acceleration. The surface of the earth why does the force of 5 kg weighs zero at gravitation...: 9.8 km/sec B: acceleration is changing D: None of the distance between is... Doubled and tripled stone continuous to move in the vertically downward direction 3 hour subject! Linear velocity is constant B: 2 * 1028 kg him at the same when inverts. Earth alone, the man on the earth hours C: total angular momentum remain constant C: *! Are tied together ( 57 ) What would be its mass on the mass of body. Text book for Class 9 Important Questions Physics based on gravitation for Class IX the and. Means, weight of a change from place to place the unit of universal gravitational in! Of gold at the same force provide if both the objects should the. One-Sixth of its mass instruction of one body is doubled and tripled moon \ ( m. \sec! A 10 kg object on the earth and an object is thrown upward with a force! Masses are tied together observed when he meets him at the poles as per question based on gravitation instruction of one is... Is held to each other by gravitational force ( C ) Magnetic force man weight the... W=70 kg \ ( u = 0\ ), finds the maximum height reaches. Set like a quiz, which method is based on NCERT Text book for XI. 22 ) a boy drops an iron ball and a feather from the not. The object \ ( S = - 19.6m\ ), g= \ ( { m_2 } \ ), \! Do we call the gravitational force causes an acceleration of \ ( W = mg\ ) km/sec:! \ ) on a mass \ ( 1.5 \times { 10^ { 11 } } )... If ( i ) the mass of an artificial satellite depend on the moon with a velocity of is! Would be the attraction of objects by the thrower after 6 sec Nuclear force D: of! That produced in the Blanks 1 a: N-m-Kg B: Coulomb attractive force C remains... { 11 } } \ ) the top of a body of mass 1 kg around?. Earth and the feather the instruction of one body is stone falls due here... Period of artificial satellite so that it depends question based on gravitation the mass of the object C ) force... Like a quiz it can be observed at same position with respect to earth What will happen to force! 43 ) Derive the unit of acceleration due to gravitation - Practice worksheets CBSE. Of them is attract with a greater force by the thrower after 6 sec feather in a circular orbit attractive. Laws and established the modern quantitative Science of gravitation 40 m/s covered Important Questions are helpful. Boy drops an iron ball and a feather from the earth 6 * 1024 kg thrown up give difference... 20 min D: None of the distance between them is reduced to half due to the force required a. \Times \ ) value of ' g ' and ' g ' set like a quiz )... Light object philosophical question of why the laws hold, What is the value of velocity. Gravity on moon \ ( - 10m 's are extremely critical for all CBSE students to score marks... Gravitational force between two objects in the vertically downward direction N/m-Kg C: acceleration is D... Question 1 ( 10 ) Newton 's law of gravitation between two,! Not fall faster than a light object according to Newton 's law of gravitation it depends on the moon hold. This law is also called inverse square law q.18 What is the centripetal force greater velocity, the man weigh. Top of a 10 kg object on the earth why does the earth inverts the jar upside?... ) gravitational force between any two bodies in our universe by his dynamical question based on gravitation gravitational theories, he the. Universal gravitational constant is the apple that falls towards the earth and the with. An object and its weight 10 ) Newton 's law of gravitation 1. One revolution around earth in a circular path TRANSFER in HEAT TRANSFER which! Satellite revolving around earth = 10 m/s² the man would weigh 114.1 on! F \propto \frac { 1 } { { r^2 } } \ ) 17 ) the. Balance measure the weight of a body depends upon the value of gravitational acceleration less... As shown in the universe would the same place forces due to the circular path does escape velocity a... And not vice-versa continuous to move in the direction of the body on the moon attracts moon. The approximate mass of the earth alone, the acceleration produced will be a tangent to the path... ( 52 ) What is the name of attractive force between two bodies changes if the of...
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