For the element shown in figure 1 assuming plane stress conditions: a. b. For the nodal displacements given, determine the element stresses Ox, Oy, Txy, 01, 02 C. Evaluate the stiffness matrix. Determine the principal angle Op d. Determine the von Mises stress P u = 0.0 mm V = 0.0625 mm 01 u = 0.03 mm v = 0.0 mm u3 = 0.0 mm v3 = 0.0625 mm (0, 10) n = 3 j=2 (20, 0) i=1 (0, -10) E = 2.1 1011 N = 0.25 t = 10 mm m