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
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
- A
$2\,mgR$
- B
$\frac{1}{2}\,mgR$
- C
$\frac{1}{4}\,mgR$
- D
$mgR$
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