The rigid bar of negligible weight is supported as shown. Find the stress in each rod if the temperature rises DeltaT after a load P is applied. Use the following data: area of steal rod 320mm2, bronze rod 1300mm2, thermal expansion coefficient AlphaS=11.7*10-6 o/c, AlphaB=18.9*10-6 o/c, Young's modulus Es=200 GPa, Eb=83 GPa.
a = 5.60 m, b = 1.6 m, c = 0.12 mm, P = 50 kN, and DeltaT = 87 o/C.