The 40-kg disk is rotating at V = 100 rad>s. When the force P is applied to the brake as
Chapter 19, Problem 19-4(choose chapter or problem)
The 40-kg disk is rotating at \(\boldsymbol {\omega} = 100 \ rad/s\). When the force P is applied to the brake as indicated by the graph. If the coefficient of kinetic friction at B is \(\mu_{k} = 0.3\), determine the time t needed to stay the disk from rotating. Neglect the thickness of the brake.
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