Physics

Problem

![](https://storage.googleapis.com/diraq-contents/question-bank/question-images/d0d5f4c382d7/2025_11_20_928013a02c702487609fg-04.jpg) 15. The graph above shows the force of gravity on a small mass as a function of its distance

R

from the center of the Earth of radius

R_{e}

, if the Earth is assumed to have a uniform density. The work done by the force of gravity when the small mass approaches Earth from far away and is placed into a circular orbit of radius

R_{2}

is best represented by the area under the curve between (A)

R=0

and

R=R_{e}

, (B)

R=0

and

R=R_{2}

(C)

R=R_{e}

, and

R=R_{2}

(D)

R=R_{e}

and

R=\infty

(E)

R=R_{2}

and

R=\infty

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