A body of mass $m$ is kept at a small height $h$ above the ground. If the radius of the earth is $R$ and its mass is $M$, the potential energy of the body and earth system (with $h = \infty $ being the reference position ) is
A body of mass $m$ is kept at a small height $h$ above the ground. If the radius of the earth is $R$ and its mass is $M$, the potential energy of the body and earth system (with $h = \infty $ being the reference position ) is
- A
$\frac{{GMm}}{R} + mgh$
- B
$\frac{{-GMm}}{R} + mgh$
- C
$\frac{{GMm}}{R} - mgh$
- D
$-\frac{{GMm}}{R} - mgh$
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