1. In the structure below, members BF and AE are connected with a pin at D. Find the minimum diameter (rounded to the nearest 1/16 of an inch) that limits the shear stress to 7200 psi for the pin at D. F Smooth A 870 lb ↓e C -3 ft → 4.5 ft D 600 lb 2 ft -3 ft → B E 2 ft 7 ft

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