Figure shows a homogeneous, rigid block weighing 55 kN that is supported by three symmetrically placed rods. The lower ends of the rods were at the same level before the block was attached.. Use the following data Determine the stress in each rod after the block is attached and the temperature of all bars increases by 30C 2 m Steel Steel rod Bronze rod 3 m Bronze 55 KN Area (mm) 485 970 2 m E (GPa) 200 120 Steel a(/C) 11.7 x 10-6 18.9 x 10-6