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A particle of mass m moves in a horizontal circle of radius r on a rough table.

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A particle of mass m moves in a horizontal circle of radius r on a rough table. It is attached to a horizontal string fixed at the center of the circle. The speed of the particle is initially v0. After completing one full trip around the circle, the speed of the particle is ½vo

(a) Find the energy dissipated by friction during that one revolution in terms of m, v0, and r.

(b) What is the coefficient of kinetic friction?

(c) How many more revolutions will the particle make before coming to rest?

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a Here W f K i K f Since U is constant Thus W f m v 0 2 ...View the full answer


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