B) For the spring assemblage shown in Figure 1 use the direct stiffness method to: i) Assemble the global stiffness matrix. ii) Solve for the nodal displacements. iii) Determine the deflections in each spring. iv) Compute the internal element forces. [7] [3] [3] [6] Let k₁ = 10 N/mm, k2= 15 N/mm, k3 = 20 N/mm, k4= 25 N/mm, k5= 30 N/mm, k6 = 35 N/mm and F2 = 100 N 1 k2 2 kı K4 k5 3 Figure 1 K6