Problem 4 The stress tensor at a point P of a body in x-y-z coordinates are: 2 0 4 T = 0 0 0 MPa 4 0 -3/ a) Draw a cube showing the stress components on each coordinate face b) Compute the principal stresses c) Draw Mohr circle d) Determine the traction vector acting on a face with normal n = 4i+2j-4k e) Compute the magnitude of the normal component and shear component of the stress found in d)