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The truss in Figure 2 is supported by horizontal roller support at A and a pin connection at N. The structure is loaded by a vertical force of 55 kN at joint G and a horizontal force of 105 KN at C. (a) Determine the zero-force-members and reactions at the supports. Show these forces on the free body diagram of the structure. [15 Marks] (b) Using appropriate free body diagrams, determine the forces in members HK, GK, JK, MK, NK and indicate whether they are in tension or compression. [15 Marks] 105 KN B 4m E D 4m H G 55 KN 4m Figure 2 K 4m M L 3m 3m 3m