In each case shown, pinion 2 is the driver, gear 3 is an idler, and the gears have diametral pitch of 6 and 20 pressure angle. For each case, sketch the free-body diagram of gear 3 and show all forces acting. For (a), pinion 2 rotates at 600 rev/min and transmits 18 hp to the gearset. For (b) and (c), pinion 2 rotates at 900 rev/min and transmits 25 hp to the gearset. (a) y JIST 34T 22T X (b) 3 18T XD 36T 20T X (c) 20T y 18T 36T X