341_Dynamics 11ed Manual

341_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 15 W B g v B2 μ k W B t 0 = v A2 v B2 t Find v A2 v B2 , t , () = v A2 v B2 9.09 2.91 ft s = t 0.23 s = Problem 15-59 The ball A of weight W A is thrown so that when it strikes the block B of weight W B it is traveling horizontally at speed v . If the coefficient of restitution between A and B is e , and the coefficient of kinetic friction between the plane and the block is k , determine the distance block B slides before stopping. Given: W A 1lb = k 0.4 = W B 10 lb = v 20 ft s = g 32.2 ft s 2 = e 0.6 = Solution: Guesses v A2 1 ft s = v B2 1 ft s = d 1f t = Given W A g v W A g v A2 W B g v B2 + = ev v B2 v A2 = 1 2 W B g v B2
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