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

 

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