* Incorrect Disk B weighs 52 lb and has a centroidal radius of gyration of 9.7 in. The power unit C consists of a motor

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Incorrect Disk B Weighs 52 Lb And Has A Centroidal Radius Of Gyration Of 9 7 In The Power Unit C Consists Of A Motor 1 (288.1 KiB) Viewed 32 times

* Incorrect Disk B weighs 52 lb and has a centroidal radius of gyration of 9.7 in. The power unit C consists of a motor M and a disk A, which is driven at a constant angular speed of 1660 rev/min. The coefficients of static and kinetic friction between the two disks are μ = 0.69 and μk= 0.5, respectively. Disk B is initially stationary when contact with disk A is established by application of the constant force P = 2.9 lb. Determine the angular acceleration a of B and the time t required for B to reach its steady-state speed. The angular acceleration is positive if counterclockwise, negative if clockwise. TB 23° B TA Answers: a = i t = i 1.49 84 TA= 9 in. TB = 12.5 in. rad/s² S