1.

A ring of diameter 1m is rotating with an angular momentum of 10 Joule-sec. The necessary tangential force required to increase its angular momentum by 50 % in 1 sec will be (in newtons)A. 10B. 5C. 15D. 20

Answer» Correct Answer - A
`tau = (dL)/(dt) rArr F. r = (dL)/(dt) rArr F = 10`


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