Question: 6 . 7 9 For the cross section at x = 4 0 in , determine the average shear stress ( a ) at the

6.79 For the cross section at x=40 in, determine the average shear stress (a) at the neutral axis and (b) at y'=1.5in. Cross section
6 . 7 9 For the cross section at x = 4 0 in ,

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