Torques T = 5.7 kN.m are applied to a hollow aluminum shaft (G = 27 GPa and d 1 = 52 mm). The allowable shear stress is 45 MPa and the allowable normal strain is 8.0  10 -4 . The required outside...

Torques T = 5.7 kN.m are applied to a hollow aluminum shaft (G = 27 GPa and d₁
= 52 mm). The allowable shear stress is 45 MPa and the allowable normal strain is 8.0
 10^-4. The required outside diameter d2 of the shaft is approximately:

(A) 38 mm

(B) 56 mm

(C) 87 mm

(D) 91 mm