Question: A 20-kip load is carried by the crane hook shown in the figure. The cross section of the hook uses two concave flanks. The width

A 20-kip load is carried by the crane hook shown in the figure. The cross section of the hook uses two concave flanks. The width of the cross section is given by b = 2/r, where r is the radius from the center. The inside radius ri is 2 in, and the outside radius ro = 6 in. Find the stresses at the inner and outer surfaces at the critical section.

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