Answer Happy

Prob. # 4] A part of the structure for a factory automation system is a beam that spans 30.0 in as shown in figure below. Loads are applied at two points, each 8.0 in from a support. The left load F₁ = 1800 lb remains constantly applied, while the right load F₂ = 1800 lb is applied and removed frequently as the machine cycles. Determine the a) Maximum stress, b) Minimum stress, c) Mean stress, d) Alternating stress, and e) Stress Ratio. (25 points) Figure Prob. #4: F₁ = 1800 lb F₂ = 1800 lb 14 in 8 in A B RA 8 in C 4×2×14 Steel tube Beam cross section D Rp