2.2 At the critical point of a design element the displayed stresses Ox, Oy and Txy were determined (values in N/mm). Determine with the help of Mohr's Circle and analytically the extreme values of normal stress max and Omin of shear stress |t| and their orientation relative to the x-axes and the stresses ox*; y* and Txy* at an angle of = 60! What are the equivalent stresses eqN (Tensile Stress Hypothesis), eqs (Shear Stress Hypothesis), OeqvM (van Mises Criterion)? max 50 20 Txy 20 25