324_Dynamics 11ed Manual

324_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 15 v 1 1.5 m s = v 2 0.75 m s = Solution: m 1 v 1 m 2 v 2 m 1 m 2 + () v = v m 1 v 1 m 2 v 2 m 1 m 2 + = v 0.50 m s = T 1 1 2 m 1 v 1 2 1 2 m 2 v 2 2 + = T 1 20.25 kJ = T 2 1 2 m 1 m 2 + v 2 = T 2 3.38 kJ = Δ TT 2 T 1 = T 16.88 kJ = T T 1 100 83.33 = % loss The energy is dissipated as noise, shock, and heat during the coupling. Problem 15-33 Car A has weight W A and is traveling to the right at speed v A Meanwhile car B of weight W B is traveling at speed v B to the left. If the cars crash head-on and become entangled, determine their common velocity just after the collision. Assume that the brakes are not applied during collision. Given: W A 4500 lb = W B 3000 lb = v A 3 ft s = v B 6 ft s = g 32.2 ft s 2 = Solution:
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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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