1- The following state of strain has been determined on the surface of a machine part subjected to plane strain for a 45° strain rosette, where E= 210 GPa and v= 0.3 determine: α = -520μ Ε = -600μ ε. = +760μ a) The normal strains (EX, Ey) and the shear strains Yxy- b) The normal strain (En) and the shear strain (Yxy) on an inclined plane that is oriented 30° counterclokwise from x-axis. c) The principal strains (Ep1, Ep2, Ep3) and the maximum stress (Vmax). d) The normal stresses (σx, σy) and shear element oriented at angle of 30° counterclokwise from the x axis.