The 12-kg disk has an angular velocity of = 20 rad/s. If the brake ABC is applied such that the magnitude of force Pi> varies with time as shown, determine the time needed to stop the disk. The coefficient of friction at B is = 0.4. ?->(Show Answer!)

1. The 12-kg disk has an angular velocity of = 20 rad/s. If the brake ABC is applied such that the magnitude of force P varies with time as shown, determine the time needed to stop the disk. The coefficient of friction at B is = 0.4.

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