An L-shaped bracket lying in a horizontal plane supports a load P = 150 lb (see figure). The bracket has a hollow rectangular cross section with thickness t = 0.125 in. and outer dimensions b = 2.0 in. and h = 3.5 in. The centerline lengths of the arms are b₁ = 20 in. and b₂ = 30 in. Considering only the load P, calculate the maximum tensile stress st, maximum compressive stress s c, and maximum shear stress t max at point A, which is located on the top of the bracket at the support.

Transcribed Image Text:

b₂ = 30 in. b₁ = 20 in. P = 150 lb' t = 0.125 in. 0+ h = 3.5 in. b = 2.0 in.