The variation of gravitational acceleration g with altitude y is given by
g = R2/(R + y)2 g0
where R = 6371 km is the radius of the earth, and g0 = 9.81 m/s2 is the gravitational acceleration at sea level. The change in the gravitational potential energy, ΔU, of an object that is raised from the earth is given by:

Determine the change in the potential energy of a satellite with a mass of 500 kg that is raised from the surface of the earth to a height of 800 km.

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AU-I-gdy