題組內容

(20%) 3. A propeller shaft for a small yacht is made of a solid steel bar 104 mm in diameter. The allowable stress in shear is 48 MPa, and the allowable rate of twist is 2.0° in 3.5 meters.
6127446908c2f.jpg

(a) Assuming that the shear modulus of elasticity is G = 80 GPa, determine the maximum torque Tmax that can be applied to the shaft. (10%)