Two solid 1.625-in.-diameter steel shafts are connected by the gears shown in the figure. The shaft lengths are L₁ = 10 ft and L₂ = 17 ft. Assume that the shear modulus of both shafts is G= 12,900 ksi and that the bearings shown allow free rotation of the shafts. Assume Ng=51 teeth and Nc=32 teeth. If the gear at D is rotated through an angle of 7°, what is the maximum shear stress in each shaft? Answers: TI = 7₂ = 4₁ Nc 10004.11 6277.09 psi psi L₂ Tp COLLE

The figure shows a shaft carrying three gears that rotates at 1150 rpm. Gear A delivers power =10kw to a mating gear that drives a mixer. Gear C delivers power =15kw to a different mating gear that drives a circular saw. All power comes into the shaft through gear B. Draw sheardiagramand bending moment diagram. Considering only torsion, compute the body free diagram and shearing stress in each part of the shaft. Consider stress concentrations, assume the Material is 1144 OQT 1300.

1. A solid steel shaft ABCDE having diameter d = 40 mm turns with a constant angular velocity and freely in bearings at points A and E. The shaft is driven by a gear at C, which applies a torque T₂ = 625 N_m in the direction shown in the figure. Gears at B and D are driven by the shaft and have resisting torques T₁ and T3, acting in the opposite direction to the torque T2. We know T₁ = 400 N.m, but T3 is not explicitly given in the problem. Segments BC and CD have lengths LBC= 550 mm and LCD = 400 mm, respectively, and the shear modulus G = 80 GPa. Determine the maximum shear stress in each segment of the shaft and the angle of twist between gears B and D. pôrôć -LBC LCD T3 E

A circular shaft of the dimensions shown in the following figure is subjected to three torques : T1 = 28 k-in, T2 = -8 k-in and T3 = 10 k-in. (a) What is the angle of twist of the right end due to the applied torque?  (b) Plot the angle of twist diagram along the shaft.  Let, G= 12×106 psi.