22_Problem CHAPTER 10

22_Problem CHAPTER 10 - PROBLEM 10.20 A couple M of...

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PROBLEM 10.20 A couple M of magnitude 75 lb ft is applied as shown to the crank of the engine system. Knowing that 2.5 in. AB = and 10 in. BC = , determine the force P required to maintain the equilibrium of the system when ( a ) 60 , θ = ° ( b ) 120 . = ° SOLUTION From the analysis of Problem 10.19, ( ) sin cos M AB P θφ φ + = Now, with 75 lb ft 900 lb in. M =⋅ = ( a ) For 60
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