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A body of mass m taken form the earth's ...

A body of mass `m` taken form the earth's surface to the height is equal to twice the radius `(R)` of the earth. The change in potential energy of body will be

A

mg 2R

B

`(2)/(3)` mgR

C

3 mgR

D

`(1)/(3)` mgR

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaU=(mgh)/(1+(h)/(R))=(mg2R)/(1+2)=(2)/(3)mgR`
`h=2R`
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