Q1. Determine the reactions and the force in each member of the truss shown in figure below using Castigliano's second theorem. AE = constant. E 200 GPa, A = 4000 mm A F B 80 kN G H 70 kN (10 Marks) CLO-2, PLO-2, C4 D/7777 E TIT 80 kN 4 panels at 10m= 40m 10m