1. For the element shown below: a. Evaluate the stiffness matrix for the element shown below. The coordinates are in inches. Assume plane stress conditions. Let E - 10x106 psi, v = 0.25, and t = 1 in. (0, 1) 1 (0, 0) (2,0) b. Given the following nodal displacements, determine element stresses Ox, Oy, Txy, Ox, 02, the principle angle 0p, and von Mises stress. 0.0 in. v = 0.004 in. z = 0.002 in. V = 0.0 in. 3 = 0.0 in. V30.003 in.