Question
A body of mass m kg. starts falling from a point 2R above the earth’s surface. Its kinetic energy when it has fallen to a point ‘R’ above the earth’s surface [R-Radius of earth, M-Mass of earth, G-Gravitational constant]
Options :
GMm/2R
GMm/6R
2GMm/3R
GMm/3R
Answer :
GMm/6R
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