Question

why the shear modulus of a material is smaller than Young's modulus what does it signify​

Answer 1

Answer:

see below

Explanation:

shear modulus is the stress required to bring a lateral strain i,e. angular deformation in a material. (strain : parallel to the surface )

where as Young's modulus is the stress required to bring a axial/radial strain i,e. linear deformation in a material. (strain : perpendicular to the surface )

It tells us that less force is required to twist a string than to stretch it.

Answer 2

Answer:

shear modulus of a material is smaller than Young's modulus it shows that it is easier to slide layers of atoms than to pull them apart or to squeeze them close together.

In general shear modulus is one third of young modulus.

$shear \: modulus = \frac{young \: modulus}{3}$

$g = \frac{y}{3}$

$\mathbb{thank \: you }$