# Spring Shear Modulus

### Spring Shear Modulus formula

\(\large{ G = \frac { 8 \; k_s \; n_a \; D^3 } { d^4 } }\)

Where:

\(\large{ G }\) = modulus of rigidity of material

\(\large{ n_a }\) = number of active coils

\(\large{ D }\) = mean coil diameter

\(\large{ k_s }\) = spring constant

\(\large{ d }\) = wire size

Tags: Equations for Spring