BRAINCAKEPolythene
A polythene strip does not obey Hooke's law. Thin strips of polythene are very easy to stretch and undergo plastic deformation with very little force.
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Key terms in this lesson
- plastic deformation
- A change of shape from which an object does not return to its original shape once the deforming force is removed.
- Hooke's law
- The extension of a spring or wire is directly proportional to the force applied, provided the limit of proportionality is not exceeded.
More in Materials
- Investigating Hooke's Law
- Elastic Potential Energy
- Metal Wire Deformation
- Rubber
- Tensile Stress
- Tensile Strain
- Stress-Strain Graph
- The Young Modulus
All 14 lessons in Materials · All OCR AS-level Physics topics