State the universal law of gravitation. (g) The gravitational force on a body due to the Earth is equal and opposite to the gravitational force on the Earth due to the body. Why is the weight of a body at the poles more than the weight at the equator? The astronauts in a satellite orbiting the earth feel weightlessness. So, to answer your question, the gravitational field of the sun compresses space surrounding it (diminishing by the inverse-square law) and causes electromagnetic waves to … Two Marks questions. question_answer37) Name two factors which determine whether a planet would have an atmosphere or not. Which satellite do you think it could be? Change variables and observe the effect upon force values. Syllabus. For questions of other topics of Physics, use the button given at the bottom of this page. What is the distance from the sun when it is perpendicular to the major axis of the orbit from the sun? question_answer4) If spheres of same material and same radius r are touching each other, then show that the gravitational force between them is directly proportional to \[{{r}^{\mathbf{4}}}\]. Why? | | question_answer28) At which place on earth's surface, the value of \[g\] is largest and why? CBSE - Class 9th - Science - Ch 10 - Gravitation - Question Bank March 28, 2020 Add Comment Edit Hey friends, In this post we shall work towards preparing for the chapter 10th which is about Gravitation. Important questions, guess papers, most expected questions and best questions from 11th physics chapter 08 Gravitation have CBSE chapter wise important questions with solution for free download in PDF format. Which single condition enables Newton’s universal law of gravitation to be used to predict the force between the Earth and the Sun? question_answer25) Does the concentration of the earth's mass near its centre change the variation of \[\text{g}\] with height compared with a homogeneous sphere? Why Studyadda? question_answer46) Does a rocket really need the escape velocity of \[\mathbf{11}.\mathbf{2}\text{ }\mathbf{km}{{\mathbf{s}}^{-\mathbf{1}}}\] initially to escape from the earth? (f) Planets orbiting around the sun obey Kepler's Third Law (approximately). The distance between two bodies A and B is r. Taking the gravitational force according to the law of inverse square of r, the acceleration of the body is a. A. What are the conditions under which a rocket fired from the earth becomes a satellite of the earth and orbits in a circle? On the other hand, an aeroplane requires fuel to fly. The diagram shows a satellite orbiting the Earth. 18M.2.HL.TZ2.6d: The mass of the asteroid is 6.2 × 1012 kg. (b) Define weight of a body. What is the SI unit of weight ? question_answer58) Can we determine the gravitational mass of a body inside an artificial satellite? Register online for Physics tuition on Vedantu.com to score more marks in your Examination. Advertisement Remove all ads. question_answer67) Imagine a spacecraft going from the earth to the moon. Why does a tennis ball bounce higher on a hill than on plains? (c) State the SI unit of acceleration due to gravity. Why a body weighs more at the poles than at the equator? Get detailed Class 11th &12th Physics Notes to prepare for Boards as well as competitive exams like IIT JEE, NEET etc. Does the weightlessness depend upon the distance of the satellite from the earth? We Database of more then 20K CBSE Tutors, Millions of CBSE Students, Teachers and Principals. question_answer47) The moon has no atmosphere. 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