A satellite orbits the earth at a height of 400 km above the surface. How much energy must be expended to the satellite to rocket out of the earth’s gravitational influence?
Mass of the satellite = 200 kg, Mass of the earth = 6.0 x 1024 kg, Radius of the earth = 6.4 x l06 m; G = 6.67 x 10-11 Nm2/kg2.