A rotating hollow shaft is to transmit 30kw at 300rpm, the maximum torque being 20% greater than the mean. The shear stress is not to exceed 60Mpa and twist in a length of 2 meters not to exceed 1.2 degrees. Find the external diameter of the shaft if the external diameter to internal diameter ratio of 2.5. Consider modulus of rigidity as 84 Gpa.

A rotating hollow shaft is to transmit 30kw at 300rpm, the maximum torque being 20% greater than the mean. The shear stress is not to exceed 60Mpa and twist in a length of 2 meters not to exceed 1.2 degrees. Find the external diameter of the shaft if the external diameter to internal diameter ratio of 2.5. Consider modulus of rigidity as 84 Gpa.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter1: Tension, Compression, And Shear

Section: Chapter Questions

Problem 1.3.17P: A stepped shaft ABC consisting of two solid, circular segments is subjected to torques T}and...

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