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JEE Main Physics question

PhysicsGravitationJEE Main

If the moon is suddenly stopped and then released (given the radius of the moon is one-fourth that of earth and the acceleration of the moon with respect to earth is ), then the acceleration of the moon just before striking the earth's surface is (Take )

Answer: (C)

Solution

Just before impact, the surfaces touch, so the centre-to-centre distance is . Using \dfrac${g

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Question ID VK-154400