Determine spring constant from the gradient of a force-extension graph.

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