Question

A satellite is orbiting the Earth at a distance of 35 kilometers.  The satellite has a mass of 500 kilograms.  If the Earth has a mass of 5.97x1024 kilograms and a radius of 6.36x106 meters, what is the gravitational force between the Earth and the satellite?

Answer 1

The gravitational force is

$$F=Gm_1m_2/(R_E+H)^2=4850\text{ N}.$$