A horizontal boom is to be supported by a diagonal link (or links) from point A to B. At point, A, a single flange, 6” wide and 1.0” thick is to be mounted to the wall a distance “h” above the boom axis. The boom and link AB must support the loading shown with a factor of safety of 4.0. Find the tension in beam AB.

Material Strength and cost S, (ksi) 6 in $/lb A 36 55 1.5 80 2 120 4 Unit weight: w = 0.30 lb/in h 6 in A=19 in? 60 in 68 in F = 12,000 lbs