A point in a soil profile, the vertical stress, ov, is 1500 psf, the horizontal stress, oh, is 800 psf, and the shear stress that acts on horizontal plane in a counterclockwise direction, th, is 200 psf. Compute the following: (a) the magnitudes and orientations of the major and minor principal stresses, (b) the magnitude and orientation of the maximum shear stress, and (c) the magnitudes and orientations of the normal stress and shear stress acting on a plane that is inclined 600 clockwise from the horizontal. At the same point that was described previously, a new surface load is imposed that induces an additional stress increment of Ac = 500 psf that acts normal to the plane that is rotated clockwise 30 degrees from the horizontal and an additional stress increment of Ag = 300 psf that acts normal to the plane that is rotated clockwise 120 degrees from the horizontal. Compute the following: (d) the magnitudes and directions of the new major and minor principal stresses, (e) the magnitude and direction of the new maximum shear stress, and (f) the magnitudes of the new vertical stress (ov) and horizontal stress (ch)