The trailer hitch shown in Figure 1 and Figure 1-1 (p.11) has loads applied as defined in Problem 1. The100-kgf (980 N) tongue weight acts downward and the pull force

of 4905 N acts horizontally. Using the dimensions of the ball bracket shown in Figure 1-5(p. 14), determine: (a) The principal stresses in the shank of the ball where it joins the ball bracket. (b) The bearing stress in the ball bracket hole. (c) The tearout stress in the ball bracket. (d) The nonnal and shear stresses in the attachment bolts if they are 19-mm dia. (e) The principal stresses in the ball bracket as a cantilever.