Physics

Problem

A satellite makes one complete revolution around Earth every

90\,\text{min}

. Take

GM_{\oplus}=3.986\times10^{14}\,\text{m}^3\text{s}^{-2}

and Earth’s radius

R_{\oplus}=6.4\times10^{6}\,\text{m}

. What is its approximate altitude above Earth’s surface? a)

6.0\times10^{5}\,\text{m}

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

2.0\times10^{5}\,\text{m}

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