τ=TcJtau equals the fraction with numerator cap T c and denominator cap J end-fraction Measured in radians.
σ=PAsigma equals the fraction with numerator cap P and denominator cap A end-fraction The deformation per unit length. Mechanics of Materials - Formulas and Problems:...
δ=PLAEdelta equals the fraction with numerator cap P cap L and denominator cap A cap E end-fraction 2. Torsion (Circular Shafts) τ=TcJtau equals the fraction with numerator cap T