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Define stress, strain and elasticity.

   Define stress, strain and elasticity.

Engineering Physics

Engineering Physics

Jyotsna Sharma,… 1st Edition

Chapter 2, Problem 1

Instant Answer

Solved by Expert Ajay Singhal

06/14/2021

Step 1

Mathematically, it can be represented as: \[ \sigma = \frac{F}{A} \] where, \(\sigma\) = Stress, \(F\) = Force, \(A\) = Area. The unit of stress is Pascal (Pa) or Newton per square meter (N/m²). Show more…

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Define stress, strain and elasticity.

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Key Concepts

Stress

Stress is a measure of the internal forces acting within a material per unit area, resulting from externally applied forces. It quantifies how much force is distributed over a specific area, which helps in assessing whether a material will deform or fail under load.

Strain

Strain is a measure of deformation representing the relative change in shape or size of a material under applied stress. It is typically defined as the ratio of the change in a dimension (such as length) to the original dimension, and is a dimensionless quantity.

Elasticity

Elasticity is the property of a material that enables it to return to its original shape or size after the removal of stress. It characterizes the relationship between stress and strain in the elastic deformation range, and is often described using laws such as Hooke's Law.

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