Q2) The rigid platform in Figure 2 has negligible mass and rests on two steel bars, each 250.00 mm long. The center bar is aluminum and 249.90 mm long. For each steel bar, the area is 1200 mm and E = 200 GPa. For the aluminum bar, the area is 2400 mm and E = 70 GPa. When the center load P = 400 kN is applied, determine, a. The stress in the aluminum bar b. The stress in steel bar c. The deflection of steel and aluminum bar. (6 marks) (6 marks) (13 marks) Steel Aluminum Steel Figure 2