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If g is the acceleration due to gravity ...

If g is the acceleration due to gravity on earth's surface, the gain of the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth is

A

`(mgR)/(2)`

B

2mgR

C

mgR

D

`(mgR)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
`PE_(i)=-(GM_(e)m)/(R)=-mgR,PE_(f)=-(GM_(e)m)/(2R)=-(mgR)/(2)`
Increase in PE is `(mgR)/(2)`
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