why the work done by centripetal force is zero?
Answers
Answered by
31
Work done by centripetal firce is zero because the force and the object are perpenducular to each other hence sin of 90 is zero
Answered by
21
we know that work is dot product of force and displacement i.e, F. X cos of theta ...where F is force and X is displacement
centripetal force is experienced by a body when it moves in circular path.... here the direction of force is towards the centre of the circular path and displacement is along circular path the particle moves in circular path ..it means that angle between force and displacement is 90 n we know that cos of 90 is zero n when we put this value in the above equation we get W= F.X cos 90 and the whole term is reduced to zero n ultimately work becomes equal to zero ...hence work done in centripetal force is zero ...hope u understood
centripetal force is experienced by a body when it moves in circular path.... here the direction of force is towards the centre of the circular path and displacement is along circular path the particle moves in circular path ..it means that angle between force and displacement is 90 n we know that cos of 90 is zero n when we put this value in the above equation we get W= F.X cos 90 and the whole term is reduced to zero n ultimately work becomes equal to zero ...hence work done in centripetal force is zero ...hope u understood
Similar questions