The outside diameter of a hollow shat is 1.6 times the inside diameter. When transmitting 420 W of power at 180 rpm, the angle of twist is one degree over a length of 40 times the inside diameter. Taking G for the material as 85 GN/m?, determine the outside diameter of the hollow shaft in mm.

The outside diameter of a hollow shat is 1.6 times the inside diameter. When transmitting 420 W of power at 180 rpm, the angle of twist is one degree over a length of 40 times the inside diameter. Taking G for the material as 85 GN/m?, determine the outside diameter of the hollow shaft in mm.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter8: Centroids And Distributed Loads

Section: Chapter Questions

Problem 8.73P

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Concept explainers

Torsion

In mechanical engineering, torque, torsion, and twisting moment are three of the most important concepts which have different meanings. Torque is the consequence of a moment of a force that produces an angular acceleration in a body or induces rotational kinetic energy in a body. For instance, in an automobile, the power transmission shaft is a body that is always under rotation due to the external torque acting on it, this torque is created by the engine.

Question

7. The outside diameter of a hollow shat is 1.6 times the inside
diameter. When transmitting 420 W of power at 180 rpm, the angle
of twist is one degree over a length of 40 times the inside diameter.
Taking G for the material as 85 GN/m?, determine the outside
diameter of the hollow shaft in mm.

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