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MHT CET 2023 Physics question

PhysicsWork, Energy and PowerMHT CET 2023

A body of mass 'm' attached at the end of a string is just completing the loop in a vertical circle. The apparent weight of the body at the lowest point in its path is (g = gravitational acceleration)

Answer: (D)

Solution

For a body just completing a vertical circle of radius , the speed at the top satisfies (tension zero). Energy conservation gives the speed at the lowest point: . At the lowest point, , so $T =

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Question ID VK-097234