Consider an object of mass m moving in a horizontal circle of radius r on a rough table. It is attached to a string fixed at the center of the circle. The speed of the object is initially vo. After completing one full trip around the circle, the speed is ½ vo. (a) Find the energy dissipated by friction during that one revolution in terms of m and vo. (b) What is the coefficient of kinetic friction in terms of g, r and vo? c) How many more revolutions will the object make before coming to rest?

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