A torque T = 70 N-m is applied to the shaft EFG, which is running at constant speed and contains gear F. Gear F transmits torque to shaft ABCD through gear C, which drives the chain sprocket at B, transmitting a force Pas shown. Sprocket B, gear C, and gear F have pitch diameters of a = 140 mm, b = 233.338 mm, and c = 116.666 mm, respectively. The contact force between the gears is transmitted through the pressure angle = 20. d=30 mm -f=250 mm- e = 75 mm E F a Z -g=125 mm a View a-a Combine these stresses and determine the maximum principal normal and shear stresses in the shaft. The maximum principal normal stress is The maximum shear stress is [ MPa. MPa.