Express the strains εx; εy, and γxy for the element of Figure 8–3 by using the results...

Express the strains ε_x; ε_y, and γ_xy for the element of Figure 8–3 by using the results given in Section 8.2. Evaluate these strains at the centroid of the element; then evaluate the stresses at the centroid in terms of E and n. Assume plane stress conditions apply.