How much work is required to lift a 700-kg satellite to an altitude of m above the surface of the Earth? The gravitational force is , where is the mass of the Earth, is the mass of the satellite, and is the distance between the satellite and the Earth's center. The radius of the Earth is m, its mass is kg, and in these units the gravitational constant, , is

Work =
(include units; for this problem assume all given constants are accurate to many significant figures.)