Answer to Question #333886 in Mechanical Engineering for Zozo

Question

A solid and a hollow shaft, connected by a coupling, transmit power. The

outside diameters of the shafts are the same and the inside diameter of the

hollow shaft is 75 % of its outside diameter. The solid shaft is three times as

long as the hollow shaft. Take the modulus of rigidity for both shafts as 80

GPa.

(a) If the angle of twist for the solid shaft is 1°, find the angle of twist for the

hollow shaft.

(b) If the maximum shear stress in the solid shaft is 30 MPa, find the maxi-

mum stress in the hollow shaft.