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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A uniform rod AB of mass 'm' and length 'l' is at rest on a smooth horizontal surface. An impulse 'P' is applied to the end B. The time taken by the rod to turn through a right angle is [MHT-CET 2020, MHT-CET 2020]

Answer: (B)

Solution

Angular impulse about the centre: gives ; the rod turns at constant

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Question ID VK-040993