Find out the ratio of time they would take in reaching the ground. F ∝ $$\frac{m_{1} \times m_{2}}{r^{2}}$$ Answer. Yes. Answer: Why does a body orbiting in space possess zero weight with respect to a spaceship? State the universal law of gravitation. Question 3. Question 1. Question 7. Answer: (d) The quantity G is universal constant of nature. Answer: A comprehensive database of gravitation quizzes online, test your knowledge with gravitation quiz questions. How does the weight of an object vary with respect to mass and radius of the earth? But the acceleration due to gravity is represented by the symbol g. Therefore, we can write Differences between g andG. , Difficult word of chapter the tale of melon city. Question 10. Zero. Question 5. The Following Section consists of Gravitation Questions on Physics. Fp = $$\frac{G \times M_{e} \times m_{1}}{R^{2}}$$ …..(1) Class 9 | Science | Chapter 10 |Gravitation| NCERT Solutions. F ∝ m,1m2 and F ∝ $$\frac{1}{r^{2}}$$ Answer: This law states that every body in the universe attracts every other body with a force which is directly proportional to the product of their masses and inversely proportional to square of distance between them. (d) Acceleration = 10 ms-2 ∴ 49 = 0 × t + $$\frac{1}{2}$$ × 9.8 × t2 According to Newton’s third law of motion, action and reaction are equal and opposite. We know that G = 6.67 × 10-11 Nm2 kg-2 Answer: Answer: And Radius of the earth, Re = 6.4 × 106 m. Question 7. (b) At which point is the bal 1 stationary? ∴ For the second stone, i.e., weight will increase by 10%. Asked by Umesh 1st December 2017 9:49 AM . Question 3. Question 1. How does the force of attraction between the two bodies depend upon their masses and distance between them? At what place on the earth’s surface is the weight of a body maximum? Give one example each of central force and non-central force. Show that the weight of an object on the moon is $$\frac{1}{6}$$ th of its weight on the earth. Q.18 What is the weight of a body of mass 1 kg? The ratio of their accelerations due to gravity at the surface is (R 1 /R 2) 2 (R 2 /R 1) 2 ... Click the "Score and Show Answer(s)" button for explanations. radius of the earth, Re = 6400 km (b) time of fall of the body? (G = 6.67 × 1011 Nm2kg-2) Question 19. As u = 0, h1 = $$\frac{1}{2} g t_{1}^{2}$$ Answer: part1, Page 1 h2 = $$\frac{1}{2} g t_{2}^{2}$$, [NCERT Exemplar] How is gravitation different from gravity? Find the position of that point. = 0 – (0.5)2 = 2 × (-9.8) × h It occurs only when a body is in a state of free fall under the effect of gravity alone. Explain why all of them do not fall into the earth just like an apple falling from a tree. % Variation in the weight of a body = % Change in g = 0.7%. TopperLearning’s Experts and Students has answered all of Gravitation of MAHARASHTRA Class 10 Physics questions in detail. Question 1. […] Question 3. Velocity-time graph for the ball’s motion is shown in figure. Answer: Become a part of our community of millions and ask any question that you do not find in our Gravitation Q&A library. Gravitation Class 9 Extra Questions Numericals. This test will determine your knowledge of the subject. [NCERT Exemplar] Page No: 134. Question 7: Law of gravitation gives the gravitational force between (a) the earth and a point mass only Answer: (a) No Gravitational force. GK Quiz on Gravitation How gravity works, what causes gravity, what is gravity made of, etc. Acceleration in downward direction = g (b) No. the mass of body P = m1 The ‘G’ is a universal constant, i.e., its value is the same (i.e. (a) Downward When M changes to new mass M’ Let P and Q be the two bodies, 0 = u – gt1 1. Ratio will not change in either case because acceleration remains the same. Question 4. 1. = $$20 \sqrt{2}$$ms-1, Question 6. Answer. 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