Rahul is derived from the surface of earth to centre a particle is dropped from the rest at the surface of earth the speed of particle when it reaches the centre of the earth in terms of escape velocity on the surface of earth is
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A body of mass m kg starts falling from a distance 2R above the earth's surface. What is its kinetic energy
when it has fallen to a distance R above the earth stuface? (where R is the radius of Earth).
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