An intermediate shaft carrying two gears is shown in the figure. The OB shaft rotates at 60 rpm and transmits 10 kW of power. In gears, the force is transferred with a 20 clutch angle. Shaft material is made of quenched and tempered A/SI 4140 steel (Sut-1550 MPa Sy=1430 MPa). a) Find the gear forces and bearing reaction forces by drawing the free-body diagram of the system. b) The dimensions for the OB shaft are given in the figure above. OB for infinite life at 99% rellability Find the factor of safety of the spindle. All surfaces on the shaft are polished and rounding is given as r/d = 0.1 at all stages. All dimensions are in millimeters. Gearwheel A 500 mm D: 600 mm F 20 A 400 mm Gearwheel C B 200 mm D: 240 mm x FC 20 0 O 200 Q55 600 KQ 65 100 B 200 Q55