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This would mean that the force is always directed perpendicular to the direction that the object is being displaced. The angle Theta in the above equation is 90 degrees and the cosine of 90 degrees is 0. Thus the work done by the centripetal force in the case of uniform circular motion is 0 Joules.
8 years ago
by
Gaurav Chauahn
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why did you specify uniform circular motion? the work done in non uniform circular motion is also 0 right?
8 years ago
by
Amogh Varsha
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i mean work done by centripital force
8 years ago
by
Amogh Varsha