BRAINCAKELoading and Unloading
Loading and Unloading a Metal Wire
The loading and unloading line is the same provided the elastic limit is not exceeded.
Beyond the elastic limit, the unloading line is parallel to the loading line and there is permanent extension.
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Key terms in this lesson
- Elastic limit
- The point beyond which a material no longer returns to its original length when the deforming force is removed.
- Limit of proportionality
- The point beyond which the extension of a material is no longer directly proportional to the applied force.
More in Materials
- Tensile Strain
- Young Modulus
- Stress-Strain Graph for Metal Wire
- Definitions
- Other Stress-Strain Curves
- Strain Energy
- Polythene
- Rubber
All 18 lessons in Materials · All AQA AS-level Physics topics