The truck carries the spool which has a weight of 200 lb and a radius of gyration of k_G = 2 ft. Determine the angular acceleration of the spool if it is not tied down on the truck and the truck begins to accelerate at 5 ft/s². The coefficients of static and kinetic friction between the spool and the truck bed are μ_s = 0.15 and μ_k = 0.1, respectively.

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O 6 3 ft