he force of gravity on an any object due to earth is given by the equation F = G(moM/?) where G is the gravitational constant, M is the mass of the earth, mf> is the mass of the object and r is the distance between the center of mass of the earth and the center of mass of the object. If a rocket weighs 3.6 x 106 N at the surface of the earth what is the force on the rocket due to gravity when the rocket has reached an altitude of 1.2 x 104 km?
(G = 6.67 X 10-11 Nm'/kg', radius of the earth = 6370 km,
mass of the earth = 5.98 x 1024 kg).