JEE Main Physics question

Physics Systems of Particles and Rotational Motion JEE Main

A small part of the rim of a flywheel breaks off while it is rotating at a constant angular speed. Then its radius of gyration will

(A)Increase
(B)DecreaseCorrect
(C)Remain unchanged
(D)Nothing definite can be said

Answer: (B)

Solution

Losing mass from the rim (the location of greatest distance from the axis)

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Question ID VK-158950