Physics

Problem

Calculate the gravitational potential at a point

500\,\text{km}

above Earth’s surface. Take

M_{E}=6.0\times10^{24}\,\text{kg}

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

and

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

. (Give your answer in

\text{J kg}^{-1}