Problem 1.61 For the assembly and loading of Prob. 1.60, determine (a) the aver¬age shearing stress in the pin at C, (b) the average bearing stress at C in member BC, (c) the average bearing stress at B in member BC. Problem 1.60 Two horizontal 5-kip forces are applied to pin B of the assembly shown. Knowing that a pin of 0.8-in. diameter is used at each con¬nection, determine the maximum value of the average normal stress (a) in link AB, (b) in link BC.


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