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A 13.0-ft-long simply supported timber beam carries a 10.3-kip concentrated load at midspan. The cross-sectional dimensions of the timber are shown in the second figure. Assume L=6.5ft,x=2.1ft,a=3.7in.,b=4.2 in., c=0.9in, and d=10in. (a) At section a - a, determine the magnitude of the shear stress τH​ in the beam at point H. (b) At section a - a, determine the magnitude of the shear stress Tk​ in the beam at point K. (c) Determine the maximum horizontal shear stress Tmax​ that occurs in the beam at any location within the 13.0-ft span length. (d) Determine the maximum tension bending stress σmax​ that occurs in the beam at any location within the 13.0 - ft span length. Answers: (a) TH​= psi. (b) τK​= psi. (c) Tmax​= psi. (d) σmax​= psi.