For the given Mohr's circle describing the stress state in a plane sheet shown in Figure below determine: (5 marks) (a) the principle normal stresses , and (b) the maximum shear stress max and the normal stresses in this case, (c) the normal stresses and and the shear stress En stress (-axis), (10 marks) (5 marks) at the point P where the circle cuts the vertical shea (d) the angle 2p=2p* from the point P to the horizontal o-axis. T[MPa] (5 marks) -20 00 80 a [MPa]