Use the following figure to determine: 1) The average normal and shear stresses for a plane normal to the axis of the rod, figure (b). 2) The average and normal shear stresses for a plane cut oriented 60 degrees from the axis of the rod, figure (c) P 1.5 in 1.5 in P = 80,000 lbs (a) 1.5 in P 1.5 in P = 80,000 lbs (b) P 60 = P 80,000 lbs