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MHT CET Physics question

PhysicsWork, Energy and PowerMHT CET

A stone of mass 200 g attached at the end of inextensible string 1 m long is whirled in a vertical circle. If the speed of the stone is 50 cm/s and the tension in the string is 1.05 N, the angle () made by the string with the vertical, measured from the lowest position is [Take g = 10 m/s] [MHT-CET 2019, MHT-CET 2019]

Answer: (C)

Solution

Radially, , so , giving and

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Question ID VK-041078