Determine the speed required for a satellite to maintain a close circular orbit just…

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Determine the speed required for a satellite to maintain a close circular orbit just above the surface of Mars. Take Mars' mass as

6.4\times10^{23}\,\text{kg}

, its radius as

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

and

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