In the figure for Prob. 13–34, pinion 2 is to be a right-hand helical gear having a helix angle of 30◦, a normal pressure angle of 20◦, 16 teeth, and a normal diametral pitch of 6 teeth/in. A 25-hp motor drives shaft a at a speed of 1720 rev/min clockwise about the x axis. Gear 3 has 42 teeth. Find the reaction exerted by bearings C and D on shaft b. One of these bearings is to take both radial and thrust loads. This bearing should be selected so as to place the shaft in compression.