The solid shaft of radius r is subjected to a torque T. Determine the radius r of the inner core of the shaft that resists one-quarter of the applied torque (T>4). Solve the problem two ways: (a) by using the torsion formula, (b) by finding the resultant of the shear-stress distribution.

ME397: Intermediate Dynamics Lecture #01 ME397: Intermediate Dynamics Lecture #01 Department of Mechanical Engineering August 27, 2015 Disclaimer: The contents of this document are scribe notes for The University of Texas at Austin ME397 Fall 2015, Intermediate Dynamics. Introduction Note Taker: Hilgad Montelo (hilgad.montelo@utexas.edu)