Question #39840

A body of mass m is moving in a horizontal circle of radius r with constant speed v. The force on the body is mv^2/r and is directed towards centre.
Calculate the work done on the object when it moves through a distance which is:
1. 1/2 The circumference of the circle
2. 1/4 the circumference of the circle
3. 3/4 the circumference of the circle
4.complete circumference of the circle.

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