The three bar assemblage is shown in Fig.(i). A force of 2500 N is applied in the x direction at node 2. The length of each element is 750 mm. Take E=4 x 105 N/mm and A= 600 mm for elements 1 and 2. Take E=2x105 N/mm and A = 1200 mm for element 3. Nodes 1 and 4 are fixed. -'0' 11/ Calculate the following: (i) Global stiffness matrix. (ii) Displacements of nodes 2 and 3. Prepared by Dr.V.Sivananth 0 2 2250 mm 3 Fig. (i) 3 -X