279_Dynamics 11ed Manual

# 279_Dynamics 11ed - Engineering Mechanics Dynamics L1 = 2 2 a b Chapter 14 2 L2 = F L1 L2 W h = 1 W 2 v2 2 g P = F v2 cos 2 a b h v2 = 2 2 F L L g

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Engineering Mechanics - Dynamics Chapter 14 L 1 a 2 b 2 + = L 2 a 2 bh () 2 + = FL 1 L 2 Wh 1 2 W g v 2 2 = v 2 2 F W L 1 L 2 g 2 gh = PF v 2 cos θ 2 = P 0.229 hp = Problem 14-61 The collar of weight W starts from rest at A and is lifted with a constant speed v along the smooth rod. Determine the power developed by the force F at the instant shown. Given: W 10 lbf = v 2 ft s = a 3f t = b 4f t = Solution: atan a b = F cos W 0 = F W cos = v cos = P 0.0364 hp = Problem 14-62 An athlete pushes against an exercise machine with a force that varies with time as shown in the
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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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