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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A disc of mass 50 kg and radius 1 m is rotating at 180 r. p. m. The torque required to rotate the disc in opposite direction with same speed in time 24 second is [MHT-CET 2018, MHT-CET 2018]

Answer: (B)

Solution

, rad/s, and reversing the direction changes the angular velocity by

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Question ID VK-041084