*RIO4. The shaft has a radius cand is subjected to a torque per unit length of t, which is distributed uniformly over the shaft's entire length L. If it is fixed at its far end A, determine the angle of twist d of end B. The shear modulus is G.

The shaft has an outer diameter of 1.5 in. and an inner diameter of 0.8 in. If it is subjected to the applied torques as shown, determine the shear stress distribution on the cross-section within region EA. The smooth bearings at A and B do not resist torque 1500 lb-in. E 2100 lb-in. B 600 lb.in.

The compound shaft is composed of bronze cylindrical segment AB and steel cylindrical segment BC. The two ends of the compound shaft are fixed to rigid supports. The external torque (T') is applied at B. The shear modulus of segment AB and BC is 40 GPa and 80 GPa, respectively. The length of the segment AB and BC is 2 m and 1 m, respectively. The diameter of the segment AB and BC is 0.05 m and 0.025 m, respectively. Determine the external torque T applied to point B so that one of the principal stresses for a point H on the surface of the segment AB is – 100 MPa. T H. B C A 2 m 1 m

Mechanics of materials I