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Elasticity and materials

WJEC 3420QS — matched to your course.

Force-extension behaviour, Hooke's law, elastic energy and material response.

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Elasticity and materials

Tailored to WJEC 3420QS.

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Subtopics and study areas

  • Interpret force-extension data and apply F = kx in the proportional region.
  • Distinguish elastic and plastic deformation and identify the limit of proportionality.
  • Calculate elastic energy for an ideal spring and evaluate experimental force-extension data.
  • Use F = kx in the proportional region of a force-extension graph.
  • Interpret spring constant and the limit of proportionality.
  • Relate work done in stretching to the area under a force-extension graph.
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Force and extension of a spring

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Subtopics and study areas

  • Measure extension for a range of forces, determine the spring constant and relate the force–extension graph to work done.
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