Question: The 12-lb disk A has a radius us rA = 6 in. and an initial angular velocity 0 = 750 rpm clockwise. The 30-lb disk

The 12-lb disk A has a radius us rA = 6 in. and an initial angular velocity ω0 = 750 rpm clockwise. The 30-lb disk B has a radius rB = 10 in. and is at rest. A force P of magnitude 5 lb is then applied to bring the disks into contact. Knowing that μk = 0.25 between the disks and neglecting bearing friction, determine

(a) The angular acceleration of each disk,

(b) The final angular velocity of each disk.

B 03

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