A vertical load P = 20 kN acts at joint 2 of the two-bar (1–2 and 2–3) truss shown in Fi...

A vertical load P = 20 kN acts at joint 2 of the two-bar (1–2 and 2–3) truss shown in Fig. P7.35. Find (a) the global stiffness matrix for each member; (b) the system stiffness matrix; (c) the nodal displacements; (d) reactions; (e) the axial forces in each member, and show the results on a sketch of each member. Assumption:The axial rigidity AE= 60 MN is the same for each bar.