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A thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity ω. Two objects each of mass m are attached gently to the opposite ends of a diameter of the ring. The ring will now rotate with an angular velocity

(a) ω(M-2m) /(M+2m)

(b) ωM/M+2m)

(c) ωM/M+m

(d) ω(M+2m)/M

Ans. b

(49)

5/5 - (1 vote)

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