A transmission shaft, transmitting 8 kW of power at fluctuating speed of 400-1200 rpm from a bevel gear G to a helical gear G and mounted on two taper roller bearings B and B is shown in Figure. The gear tooth forces on the helical gear act at a pitch circle radius of 55 mm, while those on the bevel gear can be assumed to act at the large end of the tooth at a radius of 50 mm. Under these loading forces calculate; a) Reaction forces at B and B (10 points) b) Draw shear, moment and torque diagrams in XY plane Draw shear, moment and torque diagrams in XZ plane (10 points) c) Make a decision about critical location on shaft (5 points) B Max 3795 Min 1265 150 4425 1475 G Max 10419 Min 3473 (a) 150 100 Max 1317 Min 439 Max 11460 Min 3820 3950 1319 G