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.(adsbygoogle = window.adsbygoogle || []).push({});

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.

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# Homework Help: Work & Energy of disc on conveyor belt

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