Modulus of rigidity

The modulus of rigidity, also known as shear modulus, measures a material's resistance to shape changes when subjected to shear stress—forces that cause parts of an object to slide past each other. It quantifies how much a material resists deformation under such forces. A higher modulus indicates the material is stiffer and less likely to deform; a lower value means it's more flexible. This property helps engineers determine how materials will behave under twisting or sliding forces in structures, machinery, and other applications, ensuring safety and proper performance.