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Two spherical shells each of mass m but radii are R and R2 are placed in such a way that the distance between centres is 3R2 as shown in figure. The gravitational force between them

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Important Questions on Gravitation

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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>EXERCISE 7.3>Q 14
Two spherical bodies having masses M and 3M, and radii r and 4r respectively are released in free space from rest such that the initial separation between their centres is 13r. If only force is gravitational attraction, the distance covered by the smaller body just before collision is
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>EXERCISE 7.3>Q 15
If g is the acceleration due to gravity on the surface of the earth, the gain in potential energy of an object of mass m raised from the earths surface to a height equal to the radius R of the earth is
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>EXERCISE 7.3>Q 16
Let V and E represent gravitational potential and gravitational field strength at a distance r from the centre of a hollow sphere. Consider the following statements
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>EXERCISE 7.3>Q 17
Two objects of masses m and 2 m are at rest at infinite separation. They move towards each other under mutual gravitational attraction then at a separation r, which of the following is true?
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>EXERCISE 7.3>Q 18
Given that mass of the earth is M and its radius is R. A body is dropped from a height equal to the radius of the earth above the surface of the earth. When it reaches the ground, its speed will be
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>EXERCISE 7.3>Q 19
Two bodies of masses M and 4M Are placed at a distance r. The gravitational potential at a point on the line joining them where the gravitational field is zero is.
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>EXERCISE 7.4>Q 20
A double star system consists of two starts having masses m and 2 m separated by a distance r
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>EXERCISE 7.4>Q 21
In a reference frame fixed to Sun,