*R2-4. The spool has a weight of 30 lb and a radius of
Chapter 21, Problem R2-4(choose chapter or problem)
*R2-4. The spool has a weight of 30 lb and a radius of gyration kQ = 0.65 ft. If a force of 40 lb is applied to the cord at -4, determine the angular velocity of the spool in / = 3 s starting from rest. Neglect the mass of the pulley and cord.
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