Beams: 3b The “legger" at the left end of the trailer consists of a horizontal beam and two legs. The horizontal beam can be considered as a pinned beam as

shown, and the force from the trailer onto the beam is200 lb/ft imposed over 1.0 ft at the middle of the beam. For the beam cross-section being 2.5" x 2.5", calculate: (a) the maximum tensile bending stress o, in the entire beam, in psi; and (b) the maximum shear stress t in the entire beam, in psi.