A ring of diameter 1m is rotating about a central axis perpendicular t – McqOptions

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1.	A ring of diameter 1m is rotating about a central axis perpendicular to its diameter. It is rotating with a speed of 10rad/s. What force should be applied on it tangentially to stop it in exactly 3 rotations? Let the mass of the ring be 2kg.
A.	10 N
B.	25/3 N
C.	50/3 N
D.	12.5/3 N
Answer» C. 50/3 N

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