If g is the acceleration due to gravity ...

If g is the acceleration due to gravity on the earth's surface, the gain in 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

2mgR

mgR/4

mgR/2

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The correct Answer is:

`P.E. =-GMm(1/(R_(1))-1/(R_(2)))`

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