(Solved): Using the direct stiffness method for the truss shown in Figure 2, solve for the following: a) The ...

Using the direct stiffness method for the truss shown in Figure 2, solve for the following: a) The horizontal and vertical components of displacement at node 3 [40 Marks] b) The element forces for the plane truss [20 Marks] Let \( A=50 \times 10^{-4} \mathrm{~m}^{2} \) and \( E=210 \mathrm{GPa} \) for all elements