The following data were obtained during a tension test of an aluminum alloy. The initial diameter of the test specimen was 0.505 in., and the gage length was 2.0 in. Load (lb) 0 2310 4640 6950 9290 11600 13000 Elongation (in.) 0 0.0022 0.0044 0.0066 0.0088 0.0110 0.0150 Load (lb) 14000 14400 14 500 14600 14800 14 600 13 600 Elongation (in.) 0.020 0.025 0.060 0.080 0.100 0.120 Fracture Plot the stress-strain diagram and determine the following mechanical properties: (a) proportional limit; (b) modulus of elasticity; (c) yield stress at 0.2% offset; (d) ultimate stress; and (e) nominal rupture stress.