Physics

Problem

A moonlet orbits planet R in a circular path of radius

2.0\times10^{7}\,\text{m}

with a period of

8.0\,\text{h}

. The radius of planet R is

5.0\times10^{6}\,\text{m}

. From these data, the acceleration due to gravity at the surface of planet R is closest to a)

19.6\,\text{m}\,\text{s}^{-2}

9.8\,\text{m}\,\text{s}^{-2}

13.9\,\text{m}\,\text{s}^{-2}

15.2\,\text{m}\,\text{s}^{-2}