butuvanuaimmanuel9 butuvanuaimmanuel9 12-09-2022 Engineering contestada Determine the changes in length, breadth and thickness of a steel bar which is 4m long, 30mm wide and 20mm thick and is subjected to an axial pull of 30kN in the direction of its length. Take E = 2 x 105 N/mm2 and Poisson’s ratio = 0.3