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

$E=\frac{1}{2}U=-\frac{1}{2}\frac{G{M}_E{m}_s}{r}=-\frac{1}{2}\frac{(6.67\times 10^{-11})(6\times 10^{24})(50)}{6.67\times 10^6}=-1.5\times 10^{9}J$

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