A solid bar (mild steel) of 3cm diameter and 20cm length is subjected to a tensile test. Load at elastic limit is 250kN while extension at a load of 150kN is 0.21mm. The maximum load is found to be 380kN. Total extension of the steel bar is measured to be 60mm with its diameter at the time of failure being 2.25cm. Determine: (a) the Young's Modulus, (b) the stress at the elastic limit (c) the total percentage elongation, and (d) the total percentage decrease in area (e) Poisson's ratio under final conditions. [8M]