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NEET 2004 Physics question

PhysicsSystems of Particles and Rotational MotionNEET 2004

A wheel having moment of inertia 2 kg-m about its vertical axis, rotates at the rate of 60 rpm about the axis. The torque which can stop the wheel's rotation in one minute would be :-

Answer: (2)

Solution

Initial angular velocity rad/s. To stop in s: $0 = ω_0 - α t

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Question ID VK-089371