253_Dynamics 11ed Manual

253_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 14 Given 02 v A v B + = W A d 2 sin θ 1 () W B d sin 2 μ k W A cos 1 d 2 k W B cos 2 d + ... 1 2 g W A v A 2 W B v B 2 + = v A v B Find v A v B , = v B 1.543 ft s = v A 0.771 ft s = Problem 14-15 Block A has weight W A and block B has weight W B . Determine the speed of block A after it moves a distance d down the plane, starting from rest. Neglect friction and the mass of the cord and pulleys. Given: W A 60 lb = e 3 = W B 10 lb = f 4 = d 5f t = g 32.2 ft s 2 = Solution: L 2 s A s B + = Δ s A s B + = v A v B + = 0 W A e e 2 f 2 + d + W B 2 d 1 2 W A g v A 2 1 2 W B g 2 v A 2 + = v A 2 gd W A 4 W
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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