How much work is required to lift a 800-kg satellite to an altitude of 3. 106 m above the surface of the Earth? The gravitational force is F = GMm/r², where M is the mass of the Earth, m is the mass of the satellite, and r is the distance between the satellite and the Earth's center. The radius of the Earth is 6.4. 106 m, its mass is 6 · 1024 kg, and in these units the gravitational constant, G, is 6.67 · 10-11. Work = (include help (units); for this problem assume all given constants are accurate to many significant figures.)