The pruning mechanism of a pole saw is shown as it cuts a branch S. For the particular position drawn, the actuating cord is parallel to the pole and carries a tension of 30 lb. Determine the shearing force P applied to the branch by the cutter, the total force supported by the pin at E and the force exerted by member CD. The force exerted by the light return spring at C is small and may be neglected.

20% 209 30 lb c 20 D T S 75 AB = 1". BC = ED = 3", EB = DC = 4- DF = 6"