1) For the truss shown in Fig. 1, determine the nodal displacements and stresses in each element by using hand calculations. Let the cross-sectional area of each element, A = 6 x 10^-4 m², Elastic modulus, E = 70x10⁹ N/m², Poisson's ratio, v = 0.3. You can solve the matrix equation by using a calculator or computer. Verify your result by comparing against ANSYS solution.

2) A square simply supported 50 cm by 50 cm steel plate with thickness 3 mm has a round hole of 10 cm diameter drilled through center. The plate is uniformly loaded from the bottom surface with a pressure load of 15 kN/m². Elastic modulus is E = 210 x 10⁹ N/m² and Poisson's ratio is v = 0.33. Determine the von Mises distribution in the plate.