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JEE Main Physics question

PhysicsGravitationJEE Main

For a body lying on the equator to appear weightless, what should be the angular speed of the earth? (Take ; radius of earth km)

Answer: (C)

Solution

Weightlessness at the equator requires \sqrt{g/R}\sqrt{10/(6.4×10^6)}\time$

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Question ID VK-154421