A 0.400-kg particle slides around a horizontal track. The track has a smooth vertical outer wall forming a circle with a radius of 1.50 m. The particle is given an initial speed of 8.00 m/s. After one revolution, its speed has dropped to 6.00 m/s because of friction with the rough floor of the track.
(a) Find the energy converted from mechanical to internal in the system due to friction in one revolution.
(b) Calculate the coefficient of kinetic friction.
(c) What is the total number of revolutions the particle makes before stopping?