A satellite orbits a planet of mass in a circular path of radius

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

Problem

A satellite orbits a planet of mass

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

in a circular path of radius

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

. Using

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

, determine the kinetic energy per unit mass (in

J\,\text{kg}^{-1}

) of the satellite.