MHT CET Physics question

A man stands at the centre of a turn table and the turn table is rotating with certain angular velocity. If he walks towards rim of the turn table, then

(A)moment of inertia of the system decreases
(B)angular momentum of system increases
(C)angular velocity of the system increases
(D)kinetic energy of the system decreasesCorrect

Answer: (D)

Solution

Moving outward increases I; L is conserved, so decreases, and

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Question ID VK-040260