A steel sheet was deformed plastically. It was found that the principal engineering strains in the plane of the sheet were e =0.172, and ez = -0.0431. Assume the ratio of stresses, a = 02/01, was maintained constant during the loading and that there was no stress normal to the sheet surface. Also assume von Mises criterion was obeyed a. Find the ratioa = 02/01 b. Find the ratio o/0, c. Find the effective strain d. Assume the tensile stress-strain curve for this steel can be described by o = 650e0.22 MPa, find the magnitude of o at the end of loading %3D