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If the gravitational potential energy of...

If the gravitational potential energy of a body at a distance `r` from the centre of the earth is `U`, then it's weight at that point is

A

U

B

`(U^(2))/r`

C

`U^(2)r`

D

`U/r`

Text Solution

Verified by Experts

The correct Answer is:
D

As U=mgr, weight =U/r
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NARAYNA-GRAVITATION-EXERCISE -I (H.W.)
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  5. The escape velocity of a sphere of mass m is given by

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  8. If the escape velocity on the earth is 11.2km-s^-1, its value for a pl...

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  16. A satellite of mass m is revolving in a circular orbit of radius r. Th...

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  19. The K.E. of a satellite is 10^(4)J. It's P.E.is

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