A uniform rod having weight W is pin-supported at A from a roller which rides on horizontal track. If the rod is originally at rest, and horizontal force F is applied to the roller, determine the acceleration of the roller. Neglect the mass of the roller and its size d in the computations.

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Given: W = 10 lb F = 15 lb 1 = 2 ft 20 g = 32.2 ft 2 S