Problem 2. Three loads are applied to the short rectangular post shown in Fig. 2(a). The cross- sectional dimensions of the post are shown in Fig. 2(b). Determine: (a) The normal and shear stresses and points H and K; (b) The principal stresses and maximum in-plane shear stress at point H, and show the orientation of theses stresses in an appropriate sketch. 50 mm 210 kN 95 kN H 30 mm 65 kN K 75 mm 150 mm 160 mm 120 mm x H Z Fig. 2(b) K 30 mm X