Identify the limit of proportionality on a force-extension graph.

In the subtopic Stretching and deformation, this learning objective focuses on identify the limit of proportionality on a force-extension graph. For AQA GCSE Physics 8463 Unit 4.5 Forces, keep the explanation inside Stretching and deformation and Forces and elasticity. Approved keywords for this objective include extension and limit of proportionality. A strong answer separates scalar and vector quantities, uses correct units where quantities are involved, and links the physical reasoning back to identify the limit of proportionality on a force-extension graph. This is not a generic revision point: it is specifically about Stretching and deformation, Forces and elasticity, and the approved wording of the learning objective.