Problem: The coefficient of kinetic friction between the 100 lb disk and the surface of the conveyor belt is 0.2. If the conveyor belt is moving with a speed of 6 ft/s when the disk is placed in contact with it determine the number of revolutions the disk makes before it reaches a constant angular velocity. So this is what I have so far: At state 1: T1 = 1/2 * m * V^2 + 1/2 * Ig * [tex] \omega^2[/tex] Work done from state 1 to state 2: U = Moment * [tex] \theta[/tex] Moment = friction *(0.5) = (0.2)*(100)*(0.5) At State 2: I get stuck right here. Don't I have to know how far the disk travels to be able to calculate velcocity at state 2 and so on. Any pointers would be appreciated.