Question

Рис от 20 р The boom DF of the jib crane and the column DE have a uniform weight of 99 lb/ft. Take: d1 = 1 ft, d2 = 5 ft, d3 = 2.2 ft, d4 = 4 ft, d5 = 8 ft. If W = 222 lb, determine the shear force in the crane on cross section at the point A (VA) in lb. Please be mindful of the sign convention for internal loads. Selected Answer: 222 Correct Answer: 439.800 + 3%

Answer 1

sol Consider Section AF and draw the free body diagram typ= wdz 03. Given, uniform Weight (URL) (W) = 99 1blft - P = wxds p = 99x2.25 217.816 (9+) EFy=0 → V-P-W=0 VA = PTW VA = 217.87222 I VA = 439.8 lb