Gravitational potential energy of an object of mass m at a height h from the surface of the earth, where h is small compared to radius of earth is .
A
mgh
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B
GMm/h
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C
GMg
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Solution
The correct option is A mgh When h is small compared to the radius R of the earth, we assume g (acceleration due to gravity) to be constant and therefore, the gravitational potential energy is given by mgh.