To determine shear stress and shear stress distribution developed in circular shafts subjected to applied torque. prior to starting this tutorial, students should be familiar with: the torsion formula; equations for calculating the polar moment of inertia for circular cross-sections; and how to find internal torque in a statically determinate system. the solid shaft cross-sections shown are subjected to the externally applied torques shown. compare the corresponding shear stresses developed in each shaft at point p. rank the solid shafts from the largest shear stress at p to the smallest shear stress at p. (for example, 4 > 3 = 1 > 2). the correct ranking cannot be determined.