\[\frac{\text { Shear stress }}{\text { Shear strain }}=\text { Shear Modulus}\]\[K=\frac{\sigma_{b}}{\varepsilon_{b}}=\frac{P}{-\delta V / V}\]
\[\frac{\text { Shear stress }}{\text { Shear strain }}=\text { Shear Modulus}\]\[K=\frac{\sigma_{b}}{\varepsilon_{b}}=\frac{P}{-\delta V / V}\]