2. B: 2 hours Both the objects should reach the ground at same time, but it does not, give reason. 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? Q.10 What is the approximate mass of earth? D: 6.67 * 10-10 cgs unit. Which will fall with a greater acceleration? (35) How does the gravitational force between two bodies changes if the distance between them is tripled? 6.67x 10 11 c. 1 N d. 9.8m/s 2. {\sec ^{ - 2}}\), Therefore, \(v = 19.6m/s\) [negative sign is retained because of sign convention], (27) Give the difference between mass and weight. In order that a body of 5 kg weighs zero at â¦ (37) An object weighs 294 N on the earth. Gravitation is a fundamental attractive force between any two objects in the universe. Home \ [MCQ]> Gravitation – Questions Answers. D: None of the above, Increases as height increase from the earth. By his dynamical and gravitational theories, he explained Keplerâs laws and established the modern quantitative science of gravitation. (7) How does gravity differ from gravitation? Here is a solved numerical example on Gravitation: Question: An object of mass 50kg is raised to a hight of 10m above the ground. Show this by deriving an expression for the same. Now lets test the following mcqs from gravitation. Therefore I encourage you to practice these mcqs set like a quiz. He finds that the iron ball reaches the ground much earlier than the feather. The law of gravitation states that it depends on the masses of the objects and the distance between them. These MCQ's are extremely critical for all CBSE students to score better marks. Q.22 If the radius of earth is decrease keeping mass constant, then the length of day will, A: decrease B: Coulomb attractive force Here, mass of the moon on man, \(m = 70Kg\), Acceleration due to gravity on the moon \(1.63m. (a) Gravitational Force (b) Electrostatic Force (c) Magnetic Force (d) None 2. D: Tangential velocity of equator. Heliocentric model was proposed by _____. A: Weight of a body will increases {\sec ^{ - 2}}\). {\sec ^{ - 2}}\) in a 1 kg mass somewhere in space. Hope you enjoy it. (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 \(1.5 \times {10^{11}}m\). GRAVITATION MULTIPLE CHOICE QUESTIONS 1. (6) The weight of a body on the moon is about one-sixth of its weight on the earth. A: 36000 km above the earth surface (25) What is the centripetal force? \(F \propto \frac{1}{{{r^2}}}\). {\sec ^{ - 2}}\)), we have, \(mass(m) = \frac{{weight(W)}}{{gravity}}\), or, \(W = \frac{{50N}}{{9.8m. The stone continuous to move round as long as the string is held. D: be zero, Q.24 If a stone bring back to earth from moon then its, A: mass will be changed The mass of moon is about 0.012 times that of the earth and its diameter is â¦ Multiple Choice Questions on Gravitation - Understanding in Details Gravitation is a fundamental force acting between two bodies in space. (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. Q.25 Suppose an object is thrown upward with an angle θ providing velocity equal to escape velocity (Ve). C: gravitational force due to earth 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 This is because the gravity of the moon is \(\frac{1}{6}th\) of that of the earth. F â 1 r 2. The acceleration produced by the gravitational force of earth does not depend on the mass of the object. B: 2 * 1032 kg C: Weight of a body 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. C: 2 * 1030 kg (54) If the moon attracts the earth why does the earth not move towards the moon? Gravitation (Worksheet-1) Fill in the Blanks 1. 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. Q.3> What is the unit of Universal Gravitational Constant in SI unit? A: 9.8 m-s2 {\sec ^{ - 2}}\) on a mass \({m_1}\) and an acceleration of \(24m. () What would be its mass on the moon? The 1 m Online test of Chapter 10 Gravitation 1| Class 9th Science Questions : 1. A: 6.67 * 10-6 cgs unit (53) The earth and the moon are attracted to each other by gravitational force. (52) What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? Why then, a heavy object does not fall faster than a light object? 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. Here, \(u = 0\), \(S = - 19.6m\), g= \( - 10m. B: angular velocity remain constant Why? GRAVITATION 1. 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. Its, A: linear velocity is constant 9.8N b. 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. Question 6. A: 2 * 1034 kg 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 \(F = \frac{{G{m_e}{m_s}}}{{{R^2}}} = \frac{{6.67 \times {{10}^{ - 11}} \times 6 \times {{10}^{24}} \times 2 \times {{10}^{30}}}}{{{{\left( {1.5 \times {{10}^{11}}} \right)}^2}}} = 3.56 \times {10^{22}}N\). (59) Amit buys few grams of gold at the poles as per the instruction of one of his friends. B: At equator Q.6> Where the value of gravitational acceleration is less due to the diurnal motion of earth? Now, he puts the iron ball and the feather in a long jar from which air is completely evacuated. Mass remain same but weight will be changed. or Newton. 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. C: N-m/Kg2 (\(g = 9.8m. The above question papers contain MCQs (Multiple choice questions) on Gravitation, which have been collected from various objective oriented entrance examination conducted in India i.e.,MHT-CET, IIT-JEE, AIIMS, CPMT, NCERT, AFMC etc. Gravitation | NCERT Class 9 Chapter 11 Notes, Explanation, Question and Answers Gravitation CBSE Class 9 Science Chapter 11 - Complete explanation and Notes of the chapter 'Gravitation'. B: The radius of the object In our day-to-day life, we talk about the term work, power and energy. D: 12 km/sec. Will the friend agree with the weight of gold bought? (47) What do you mean by acceleration due to gravity? {\sec ^{ - 2}}\), Thus, the man would weigh 114.1 N on the moon. A: 1 hour 30 min. (60) Gravitational force on the surface of the moon is only \(\frac{1}{6}th\) as strong as gravitational force on the earth. (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. B: 6.67 * 10-7 cgs unit 3. A force of 5 N produced an acceleration of \(8m. What is the centripetal force that makes moon revolve around earth? (3) Reflection in Spherical Mirror. Which of them is attract with a greater force by the earth? A: 9.8 m-s2 Gravitation Class 11 MCQs Questions with Answers Question 1. (2)Geometry of Spherical Mirror. Q.4> What is the value of gravitational acceleration on Earth? D: None of this. unit of G and its value, S.I. Q.9> What is the approximate mass of Sun? 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. 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? (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. D: 8.9 m/s2, Q.5> The value of gravitational acceleration is –, A: increases as height increase form the earth. If yes, in which direction? (34) The gravitational force between two objects is F. How will this force change when distance between them is reduced to half? Explain with an example. 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. (57) What is the acceleration of free fall? C: 5* 1024 kg (55) What happens to the force between two objects, if (i) the mass of one object is doubled? Q.21 Let the escape velocity of earth is Ve. (18) State the S.I. 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. (mass of the earth \(6 \times {10^{24}}Kg\) and radius of the earth \(6.4 \times {10^6}m\) ). B: 9.8 m/s2 We have Provided Gravitation Class 9 Science MCQs Questions with Answers to help students understand the concept very well. (23) How much would a 70 Kg man weight on the moon? (44) State the universal law of gravitation. This document is highly rated â¦ 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. 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. (45) Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth. 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. D: Can not be answered. Physics Class 11 Important Questions are very helpful to score high marks in board exams. (61) A ball is thrown vertically upward with a velocity of 49 m/s. 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 force required for a body to move in a circular path is called centripetal force. The universal gravitational constant is the force of attraction between two point masses of 1 Kg each kept at a distance of 1 metre. 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. This is because the action and reaction forces are equal. A body of mass 1kg is attracted by the earth with a force which is equal to a. Q.7> In which region of earth the weight of a body is slightly greater? D: 9.8 N, A: mass of the object × gravitational acceleration But it is the apple that falls towards the earth and not vice-versa. (11) A boy drops an iron ball and a feather from the top of a tower. Gravitation is the force of attraction between two objects in the universe. (ii) the total time it takes to return to the surface of the earth? D: radius of orbit remain constant. Q.17 Does the gravitational force same for two objects inside and outside the water? D: angular velocity constant. (42) A ball thrown up is caught back by the thrower after 6 sec. B: Increase D: less than rest object. C: The density of the object (28) What is the importance of universal laws of gravitation? That is, the acceleration produced will be \(5m. Physical Quantities: All the quantities in terms of which laws of physics can be described and which can be measured are known a... B. Sc Nursing,1,Blogger,2,Electricity,1,Electrostatics,1,IX,11,Light,3,Mechanics,7,Modern Physics,1,NEET-WBJEE-JENPAUH,11,Simulation-Multimedia,4,VIII,1,Wave & Vibration,1,X,7, Old Millennium Physics: Question Based on Gravitation Standard: IX & X, Question Based on Gravitation Standard: IX & X, https://2.bp.blogspot.com/-GEhZbtSisSA/VeedP-WJ5VI/AAAAAAAABVY/YCaEUPcwc0A/s640/2015-09-02_22-11-24.png, https://2.bp.blogspot.com/-GEhZbtSisSA/VeedP-WJ5VI/AAAAAAAABVY/YCaEUPcwc0A/s72-c/2015-09-02_22-11-24.png, https://physics-web-blog.blogspot.com/2015/09/question-based-on-gravitation-standard.html, http://physics-web-blog.blogspot.com/2015/09/question-based-on-gravitation-standard.html. (43) Derive the unit of force using the second law of motion. {\sec ^{ - 2}}\)). (30) Give the difference between 'g' and 'G'? C: Nuclear force The S.I. Q.1> What is the name of attractive force which act between any two bodies in our universe? Gravitation may be the attraction of objects by the earth. Q.16 What is the weight of a body inside an artificial satellite of earth? D: N/m2-Kg. Which will fall to the ground first. 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. A: 3 * 1024 kg (56) What is the importance of universal law of gravitation? C: greater than rest object It means, weight of a body depends upon the value of 'g'. Find (i) the velocity with which it was thrown up. (51) Gravitational force acts on all objects in proportion to their masses. B: gravitational force due to sun Who discovered that force is the cause of motion? (a) Centripetal force Question 7. 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. Find out the ratio of time they would take in reaching the ground. 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. B: Zero 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 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. Question From class 11 Chapter HEAT TRANSFER In heat transfer, which method is based on gravitation ? Free PDF Download of JEE Main Gravitation Important Questions of key topics. B: Weight of a body will decreases According to Newton's law of gravitation, the apple and the earth experience equal and opposite forces due to gravitation. What would be the escape velocity of a planet whose mass and radius is double from earth? Define : gravitation, gravity and gravitational force. 2. B: Velocity of earth (66) A ball thrown up vertically returns to the thrower after 6 sec. This force is called centripetal force. Gravitation is a fundamental attractive force between any two objects in the universe. C: 9.8 Kg-m/Sec2 What will happen to the gravitational force between two bodies if the masses of one body is doubled? D: None of the above. B: 9.8 kg 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. (10) Newton's law of gravitation is also called inverse square law. 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. Q.28 An artificial satellite revolving around earth in a circular orbit. Why is it so called? There are around 3-5 Q.29 What is the value of gravitational acceleration inside the earth? (50) How does the force of gravitation between two objects change when the distance between them is reduced to half? Explain. What is the total distance covered by the stone? Calculate (i) the maximum height to which it rises. Do you attract the earth as well? 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? He hands over the same when he meets him at the equator. Check below the important MCQs on CBSE Class 9 Science Gravitation: 1. Let us learn more about this. Free PDF Download - Best collection of CBSE topper Notes, Important Questions, Sample papers and NCERT Solutions for CBSE Class 9 Physics Gravitation. 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. (11) A boy drops an iron ball and a feather from the top of a tower. (20) What is the relation between mass and weight of a body? (29) A ball is thrown vertically upwards with a velocity of 49 m/s. A: 1 kg The radius of the earth \(6.4 \times {10^6}m\) and mass of the earth \(6 \times {10^{24}}Kg\). D: 3 hour. B: N/m-Kg 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, \(\frac{{{t_1}}}{{{t_2}}} = \sqrt {\frac{{{h_1}}}{{{h_2}}}} \). (4) A coin and a feather are dropped from the roof of a building. 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. Answer: If the mass of one body is doubled, [â¦] What will be observed when he inverts the jar upside down? B: 4* 1024 kg (58) What do we call the gravitational force between the earth and an object? A: Gravitational force C: remains constant A: velocity remain constant in its orbit. Science Class 9 Important Questions are very helpful to score high marks in board exams. Take \(g = 10m. B: mass and weight will be changed D: can not say, Q.23 If the earth stop rotating then the weight of an object on north pole will, A: Increase That is why this law is also called inverse square law. What acceleration would the same force provide if both the masses are tied together? B: 40000 km above the earth surface (48) What are the difference between the mass of an object and its weight? (40) The acceleration of a freely falling body does not depend on the mass of the body. The moon will move in the direction of the tangent to the moon's orbit. In the evacuated jar, both iron ball and the feather will fall together at the same time. Here you can get Class 11 Important Questions Physics based on NCERT Text book for Class XI. (17) State Kepler's third law of planetary motion. This straight line will be a tangent to the circular path. D: Zero. This video deals with an interesting question based on gravitation. unit of acceleration due to gravity is \(m.{\sec ^{ - 2}}\). B: decreases as height increase from the earth. (49) Why is the weight of an object on the moon \(\frac{1}{6}th\) its weight on the earth? B: It depends on the velocity of satellite (5) What do you mean by the weight of a body on the moon? C: Weight never be changed Taking \(g = 10m. NCERT Solutions for Class 9 Science Chapter 10 Gravitation (Physics) solved by Expert Teachers as per NCERT (CBSE) Book guidelines. What would be his mass on the earth and on the moon? C: Product of its mass and gravitational acceleration (19) The earth's gravitational force causes an acceleration of \(5m. Geocentric model i.e. D: Magnetic force. (5) Weight is measure in Kg-wt. C: Tropic of Cancer or Tropic of Capricorn C: Velocity of a body that allow it to go outside the earth Q.13 Does time period of artificial satellite depend on its mass? [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”. C: remain same Why? Whenever an object falls towards the earth under the gravitational pull of the earth alone, the fall is called free-fall. IX PHYSICS : Gravitation ï»¿ 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. So, the acceleration produce in the 3 Kg mass will be the same as that produced in the 1 Kg mass. (8) Why is the weight of an object on the moon \(\frac{1}{6}th\) of that of the earth. D: 6 * 1024 kg. (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? This force is proportional to the product of masses of the objects and inversely proportional to the square of the distance between them. (3) Consider two bodies A and B. 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 B: decrease (Acceleration due to gravity \(9.8m. The body B is heavier than A. The earth attracts the moon with a force equal to the force with which the moon attracts the earth. But in case you hit the ball with greater velocity, the ball will escape out of the gravitational field. (14) Give the S.I. B: 10 km/sec (iii) the masses of both objects are doubled? (Acceleration due to gravity on moon \(1.63m. The radius of the earth is 6400 km and g = 10 m/s². D: 63000 km above the earth surface. CBSE Class 9 Physics Worksheet - Gravitation - Practice worksheets for CBSE students.Prepared by teachers of the best CBSE schools in India. On releasing the thread the the center binding force called as centripetal force is no more acting on it, the stone flies off along the straight line. A: It depends on the mass of the body Multiple Choice Questions (MCQ) for Gravitation - CBSE Class 11-science Physics on Topperlearning. State the A ... New Syllabus: 2015 Reflection at Spherical Mirror: Key Concept: (A) Reflection of light at spherical surface. () What is the acceleration due to gravity on the moon? {{\sec }^{ - 2}}}}\). 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¦োà¦²ীà§ à¦¦à¦°্à¦ªà¦£ে à¦à¦²োà¦° à¦ª্à¦°à¦¤িà¦«à¦²à¦¨), 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. (63) A stone is thrown vertically upward with an initial velocity of 40 m/s. B: Infinite (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 \(2 \times {10^{30}}Kg\). Very Short Answer Type Questions (VSAQ) (1) You know that the earth attracts you in the vertically downward direction. C: 6.67 * 10-8 cgs unit What is the weight in newtons of a 10 kg object on the moon and on the earth? D: 2 * 1028 kg. That is why this law is also called inverse square law. {\sec ^{ - 2}}\) on a mass \({m_2}\). A: At Polar region Out of these energy is most important concept, since all living thing... à¦à¦²োà¦° à¦ª্à¦°à¦¤িà¦¸à¦°à¦£ (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. Example: Tie a stone to a thread and whirl it round as shown in the figure. Q.14 What would be the height of an artificial satellite so that it can be observed at same position with respect to earth? (9) The earth and the moon are attracted to each other by gravitational force. A: Velocity of moon {\sec ^{ - 2}}\), finds the maximum height reached by the stone. Q.15 How much time a polar satellite take to complete one revolution around earth? (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? 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. (21) The weight of a body is 50 N. What is its mass? D: Thrust produced by burning fuel. (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. Practice JEE Main Important Topics Questions solved by our expert â¦ (2) Weight of a change from place to place. Here we have covered Important Questions on Gravitation for Class 9 Science subject. The relation between mass and weight of a body is. Q.20 Does escape velocity of a body depend on its mass? Velocity of a body that allow it to go outside the earth. A: 9.8 km/sec Then there is the more philosophical question of why the laws hold, what is the mechanism which leads to the observed gravitational effects. a beam balance and a spring balance. A: N-m-Kg If not, Why? CBSE Class 9 Science Physics Chapter 10 Gravitation Exercise Questions with Solutions to help you to â¦ B: acceleration is constant Unit of G is: \(N.{m^2}K{g^{ - 2}}\), Its value is \(6.67 \times {10^{ - 11}}N{m^2}k{g^{ - 2}}\). 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. Weight of the body \(W = mg\). How much will the acceleration of a 3 Kg mass be at the same place? (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? Q.2> What is the value of Universal Gravitational Constant (G) in C.G.S unit? unit of acceleration due to gravity. It means centre seeking force. etc. Stone falls due to C: total angular momentum remain constant C: remain same C: Zero C: 2 hour 20 min (3) Weight of a body at the centre of the earth. C: 26000 km above the earth surface C: acceleration is changing Here we have covered Important Questions on Gravitation for Class 11 Physics subject. Q.12 What is the value of escape velocity of earth? Beam balance measure the mass of a body. (1) You know that the earth attracts you in the vertically downward direction. 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. C: 11.2 km/sec (ii) the maximum height it reaches and (iii) its position after 4 sec. {\sec ^{ - 2}}\), or, W=70 Kg \( \times \) \(1.63m. (22) A stone and a feather are thrown from a tower. Because feather experience the air resistance, being lighter, so it will reach later. (16) Define universal gravitational constant. {\sec ^{ - 2}}\). C: 8.9 m-s2 The average distance between the two is \(1.5 \times {10^{11}}m\). Here you can get Class 9 Important Questions Science based on NCERT Text book for Class IX. Q.8> If speed of rotation of earth increases then what would be the value of weight of a body? (ii) the distance between the objects is doubled and tripled? D: mass remain constant but weight will be changed. On the other hand, spring balance measure the weight of a body. This is what we call escape velocity. {\sec ^{ - 2}}\), We will first calculate the weight of the man on the moon. Do you attract the ea... Syllabus: (1) Reflection of light at spherical surface. MCQ on gravitation.> In this post I come up with some important general knowledge questions with answers on a very crucial topic called Gravitation.

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