Shear Modulus formula:
S = F.D0/A.ΔD
where:
S: Shear Modulus, in Pa
D0: Distance between Surfaces, in m
ΔD: Distance Sheared, in m
A: Area of Surface being Sheared, in m^2
F: Tangential Force Acting, in N
The shear modulus describes the shape elasticity of a material.