Question: 1. Determine the allowable torque a hollow steel shaft can transmit if its outside diameter is 4 in. and its inside diameter is 3 in. The allowable shear stress is 10,000 psi. Compute the angle of twist per foot of length
2. A 1.00-m-long steel wire, 4 mm in diameter, is twisted through an angle of 61° by a torque of 2.25 N·m. Determine the modulus of rigidity of the wire.