A satellite of mass m =3.0*10-ky is initially in a circular orbit about the earth with a radius =4.1x107m and velocity v. =3.1x10 m/s around the earth. Assume the earth has mass m =60*10 *ky and radius r =6.4x10m. Since m. >> m, you may find it convenient to ignore certain terms. Justify any terms you choose to ignore. a) What is the magnitude of the gravitational force acting on the satellite? What is the centripetal acceleration of the satellite? b) What are the kinetic and potential energies of the satellite earth system? State any assumptions that you make. Specify your reference point for zero potential energy. What is the total energy