1. The problem statement, all variables and given/known data The maximum proposed stress of their new design is 670MPa. You have measured the tensile strength of pieces of their steel, using an appropriate "standard" to guide you. (What does this even mean?) The load vs displacement graph is given. The steel sheet is 3mm thick. The width of the sample is 12.5mm and the gauge length sample is 50mm. Plot the stress strain graph. 2. Relevant equations mm load, N 7.52E-03 1.32E+03 1.69E-02 3.30E+03 2.61E-02 4.85E+03 3.68E-02 6.53E+03 5.02E-02 8.48E+03 6.34E-02 1.05E+04 7.74E-02 1.25E+04 9.42E-02 1.44E+04 1.04E-01 1.63E+04 1.13E-01 1.81E+04 1.27E-01 1.98E+04 1.44E-01 2.14E+04 1.80E-01 2.27E+04 4.48E-01 2.34E+04 8.10E-01 2.40E+04 1.13E+00 2.47E+04 1.47E+00 2.52E+04 1.80E+00 2.57E+04 2.16E+00 2.62E+04 2.50E+00 2.65E+04 2.81E+00 2.69E+04 3.09E+00 2.75E+04 3.42E+00 2.80E+04 3.76E+00 2.83E+04 4.18E+00 2.80E+04 4.63E+00 2.74E+04 5.12E+00 2.72E+04 5.47E+00 2.67E+04 5.71E+00 2.59E+04 5.71E+00 2.49E+04 5.71E+00 2.37E+04 5.70E+00 2.21E+04 5.30E+00 2.03E+04 3. The attempt at a solution How do I find the stress for each load? I know that it is F/A, but I thought this only applied to rods and not a metal sheet? Or am i allowed to use 12.5x5 as the cross sectional area?