Q1. The rod in the figure is subject to a temperature change of 250C. AC diameter is 100 mm, CE diameter is 75 mm and EF diameter is 50 mm. How much change will there be in the length of the bar. Esteel = 200 GPa, asteel = 11.7x10/ C. C E F 40 kN! 30 kN 145 kN 100 mm 100 mm 50 mm 50 mm 50 mm