ELASTICITY

Stress =  Strain =  Linear strain =  Volumetric strain =  Shearing strain =  Modulus of Elasticity Young's modulus y =  Elongation e =  Thermal stress = Y   Thermal strain =   Force between the two rods F =  Force constant of wire K =  Work done stretching a wire W =  Energy stored in wire u =  Thermal energy density =  Bulk modulus K =  Compressibility C =  Density of compressed liquid Modulus of rigidity h =  Paisson's ratio s =  Relation between y, k, n and s (i) y =  (ii) s =  Torsion of cylinder  Torsional rigidity C =  Work done m trusting the cylinder W =  Inter atomic force constant K = y × r0