342_Dynamics 11ed Manual

342_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 15 W B 10 lb = v 20 ft s = g 32.2 ft s 2 = e 0.6 = Δ t 0.02 s = Solution: Guesses v A2 1 ft s = v B2 1 ft s = F N 1lb = Given W A g v W A g v A2 W B g v B2 + = ev v B2 v A2 = W A g vF N Δ W A g v A2 = v A2 v B2 F N Find v A2 v B2 , F N , () = v A2 v B2 9.09 2.91 ft s = F N 45.2 lb = Problem 15-61 The man A has weight W A and jumps from rest from a height h onto a platform P that has weight W P . The platform is mounted on a spring, which has stiffness k . Determine (a) the velocities of A and P just after impact and (b) the maximum compression imparted to the spring by the impact. Assume the coefficient of restitution between the man and the platform is
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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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