Question

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why shear modules is smaller then young modules?? ​

Answer 1

Answer:

For isotropic materials, poisson ratio is generally 0 to 0.5 depending on material. Therefore, practically and mathematically speaking shear modulus (modulus for rigidity) is less than young 's modulus. because shear modulus is involved with solid s only . because shear modulus is involved with solid s only

Answer 2

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why shear modules is smaller then young modules?

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Shear modulus is often described with the materials reaction to Shear stress where as Youngs modulus is described with strain.

Stress being force per unit area and strain being the change in shape or size along an axis.

Consider a rubber or any other metal or material…would you find it easy to cut it or make it lengthier or shorter along an axis.

Sure would cut it with much ease rather than a change in size along an axis. Implies Shear modulus less than Youngs modulus.

$\huge\mathcal\pink{By:) Manjeet_Dalal}$