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MHT CET Physics question

PhysicsWork, Energy and PowerMHT CET

The mass 'm' is rotating in vertical circle of radius 'R'. The difference in its kinetic energy at the top and the bottom of the circle is (g = acceleration due to gravity) [MHT-CET 2020, MHT-CET 2020]

Answer: (D)

Solution

Only gravity does work, so the kinetic energy difference equals the change in potential energy over a height

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Question ID VK-041000