179_Dynamics 11ed Manual

179_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 13 P μ s mg cos θ () cos s sin sin s cos + cos s sin = p 2 sin s cos + cos s sin = *Problem 13-44 Each of the three plates has mass M. If the coefficients of static and kinetic friction at each surface of contact are s and k respectively, determine the acceleration of each plate when the three horizontal forces are applied. Given: M 10 kg = s 0.3 = k 0.2 = F B 15 N = F C 100 N = F D 18 N = g 9.81 m s 2 = Solution: Case 1: Assume that no slipping occurs anywhere. F ABmax s 3 Mg = F BCmax s 2 = F CDmax s = Guesses F AB 1N = F BC = F CD = Given F D F CD + 0 = F C F CD F BC 0 = F B F AB F BC + 0 = F AB F BC F CD Find F AB F BC , F CD , = F AB F BC F CD
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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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