एक वृत्ताकार शाफ्ट में मरोड़ (torsion) के कारण उत्पन्न होने वाला अपरूपण प्रतिबल (shear stress) होता है:

When a bar of length l and uniform cross-section is rigidly fixed at the upper end and hangs freely, the total elongation produced in the bar due to its own weight is given by (where w = weight per unit volume and E = Modulus of Elasticity):

The hoop stress set up in a thin cylinder subjected to internal fluid pressure is: