Satellites and Binding Energy EX 2

The binding energy is equal to the absolute value of the total energy. The satellite has the total energy

$E={\frac {1}{2}}U=-{\frac {1}{2}}{GM_{E}m_{s} \over r}=-{\frac {1}{2}}{(6.67\times 10^{-11})(6\times 10^{24})(50) \over 6.67\times 10^{6}}=-1.5\times 10^{9}J$

Therefore its binding energy is $1.5\times 10^{9}J$.