Atensile test specimen has a gage length = 50 mm and its cross-sectional area = 100 mm2. the specimen yields at 48,000 n, and the corresponding gage length = 50.23 mm. this is the 0.2 percent yield point. the maximum load of 87,000 n is reached at a gage length = 64.2 mm. determine (a) yield strength, (b) modulus of elasticity, and (c) tensile strength. (d) if fracture occurs at a gage length of 67.3 mm, determine the percent elongation. (e) if the specimen necked to an area = 53 mm2, determine the percent reduction in area.