em 10-Angle of Twist The gears attached to the fixed-end steel shaft are subjected to the torques shown. If the shear modulus of elasticity is 80 GPa and the shaft has a diameter of 14 mm, determine the angular displacement (angle of twist) of the tooth P on gear A. The shaft turns freely within the bearing at B. Present your result in radians. Op= 150 Nm B 100 mm P 280 N-m 40 N-m D 0.3 m 0.4 m (a) 0.5 m