MHT CET 2026 Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET 2026

The angular momentum of a rotating body is 'L'. When the frequency of rotating body is tripled and its kinetic energy is made one-third, the new angular momentum becomes

Answer: (D)

Solution

Rotational kinetic energy and angular momentum , so , i.e. . Frequency (hence ) becomes and the kinetic energy becomes . New angular momentum \dfrac{2(K/3)}{3ω}$ =

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Question ID VK-100366