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An L-shaped bracket ABC lying in a horizontal plane supports a load P = 670 N (see figure on page 455). The bracket has a hollow rectangular cross section with outside dimensions 50 mm x 90 mm and wall thickness 3 mm. The centerline length of arm AB is 0.5 m and of arm BC is 0.75 m. Considering only the force P, calculate the maximum tensile stress σ_{t}" maximum compressive stress σ_{C}, and maximum in-plane shear stress τ_{max} at point A, which is located on the top of the bracket at the support.
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