Physics

Problem

Satellite

S_{1}

moves round Earth in a circular orbit

3600\,\text{km}

above the surface. Another satellite

S_{2}

is to orbit Mars such that its orbital period is exactly equal to that of

S_{1}

. Mars has mass

0.11\,M_{\!E}

and radius

0.53\,R_{\!E}

. Approximately how high above the Martian surface should

S_{2}

be placed? a)

3200\,\text{km}

4800\,\text{km}

1400\,\text{km}

1100\,\text{km}