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Elasticity
Beginner
A body's ability to return to shape after force removal.
The ability of a solid to regain its shape after deforming forces are removed, within limits. It arises from interatomic forces acting like springs.
A steel spring returns to its length.
Beyond the elastic limit deformation is permanent.
In more detail
Elasticity describes how solids deform under force and return to their original shape when the force is removed, provided the elastic limit is not exceeded.
Real-world uses
- Springs in mattresses and car suspensions rely on elasticity.
- Bridges and buildings are designed to remain within the elastic range.
- A rubber band returns to its original length when released, while a bent paperclip does not, showing elastic and non-elastic behaviour.
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Frequently asked questions
What is the elastic limit?
The maximum stress a material can withstand without permanent deformation.
Are all solids elastic?
Most solids are elastic within a range, but some deform permanently under small forces.
Is every material elastic?
Most materials are elastic for small loads, but all have a limit beyond which they deform permanently.
Related topics in Fluids & Elasticity
Angle of contact · Capillary rise · Cohesion and adhesion · Stress · Strain · Hooke's law for solids