Physics

Problem

(Take

G=6.67\times10^{-11}\,\text{N m}^2\text{/kg}^2

.) A communication satellite orbits Earth once every

24\,\text{h}

in a circular path of radius

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

. The mass of Earth calculated from these data is closest to a)

7.3\times10^{24}\,\text{kg}

5.9\times10^{24}\,\text{kg}

3.6\times10^{24}\,\text{kg}

1.1\times10^{25}\,\text{kg}