Figure 1 is a steel truss ABCDE carries the nodal forces of 80 kN and 40 kN at B and 50 kN at E. The truss is supported as pin at A and D. The truss members are an equal angle of 76766 mm with the modulus of elasticity (E) of 205 kN/mm, while member CD is a spring with the flexibility coefficient (f) of 0.068 mm/kN. Using the flexibility method, determine the maximum displacement at the node and the internal forces for all members. 40 kN 2 m 80 KN B Figure 1 Spring, f=0.068 mm/kN 2 m wwwwwwwwww D E 50 KN 2 m