A body of mass $m$ is lifted up from the surface of the earth to a height three times the radius of the earth. The change in potential energy of the body is

where $g$ is acceleration due to gravity at the surface of earth.

  • A

    $3mgR$

  • B

    $\frac{3}{4} mgR$

  • C

    $\frac{1}{3} mgR$

  • D

    $\frac{2}{3} mgR$

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