(a) Determine the equivalent torsional stiffness of the propeller shaft of Problem 2.24.

(b) Determine an equivalent moment of inertia of the shaft of Problem 2.24 to be placed on the end of the shaft for a SDOF model of torsional oscillations.

Data From Problem 2.24:
The propeller of a ship is a tapered circular cylinder, as shown in Figure P2.24. When installed in the ship, one end of the propeller is constrained from longitudinal motion relative to the ship while a \(500-\mathrm{kg}\) propeller mass is attached to its other end.

Transcribed Image Text:

FIGURE P 2.24 10 m = 30 cm r = 20 cm E 210 x 10 N/m p=7850 kg/m