In order to shift a body of mass $m$ from a circular orbit of radius $3R$ to a higher radius $5R$ around the earth, the work done is

  • A

    $\frac {3GMm}{5R}$

  • B

    $\frac {1}{15} \frac {GMm}{R}$

  • C

    $\frac {GMm}{2R}$

  • D

    $\frac {GMm}{5R}$

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