what is the maximum value of potential energy that can be possessed by a heavenly body?give the general expression for potential energy of an object near the surface of earth.

General expression for potential of an object near the surface of earth:U=-GMmReHere,G is universal gravitational constant,M is Mass of the Earth,m is Mass of the object,Re is Radius of EarthMaximum value of PE of heavenly object:Expression for PE is,U=-Gm1m2rFor the maximum PE, the distance also should be maximum due to negativesign in the above expression. With increase in r, the negative value of U decreases,that is, U value increases.Umax=-Gm1m2rmaxWhen the distance approaches infinity, the potential energy also approaches infinity.

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