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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A thin horizontal circular disc is rotating about a vertical axis passing through its centre. An insect is at rest at a point near the rim of the disc. The insect now moves along a diameter of the disc to reach its other end. During the journey of the insect, the angular speed of the disc [AIEEE 2011]

Answer: (D)

Solution

Angular momentum is conserved, and the moment of inertia first decreases as the insect moves to the centre and then increases as it

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Question ID VK-040633