Centripetal force acting on a body rotating in a circle if the body moves in a circle of radius half of the initial value keeping other quantities constant then percentage change in the centipetal force is
A) 300 % B)100% C)200% D)400%
1
Expert's answer
2018-09-03T15:40:08-0400
The initial centripetal force is F=(mv^2)/r. The final centripetal force is F^'=(mv^2)/(r/2)=2F. The percentage change in the centripetal force is (F^'-F)/F 100%=(2F-F)/F 100%=100%
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