1.

If gravitational potential energy of earth and a block of mass m is taken zero at the surface then potential energy of this system at a height Re above the surface is-1.mgR/22.mgR 3.-mgR /24.-mgR

Answer» If gravitational potential energy of earth and a block of mass m is taken zero at the surface then potential energy of this system at a height Re above the surface is-
1.mgR/2
2.mgR
3.-mgR /2
4.-mgR


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