Deformation, Springs and Elastic Energy
Relate force, extension, proportionality, stiffness, elastic limits and stored energy.
How to study for GCSE Physics
Move deliberately among physical models, diagrams, equations, units, graphs, experiments and evaluation; finish with the exact paper and practical structure named by your exam board.
Core concepts
Concept 1
Elastic deformation reverses when the force is removed; inelastic deformation does not fully reverse.
Exam cue: Zero the length measurement, calculate extension and identify the proportional region before using a spring constant.
Concept 2
Force is proportional to extension only within the linear region.
Exam cue: Separate total length from extension and force from mass.
Concept 3
Work done stretching an elastic object transfers energy to its elastic store.
Exam cue: Name the physical quantities, use consistent SI units and connect the model to observable evidence.
Targeted study blocks
Tier coverage
Foundation core with Higher-tier extensions
Higher tier can require the elastic-energy relationship and less scaffolded interpretation of nonlinear force-extension data.
Risk pitfalls and guardrails
Extending a straight-line model beyond the limit of proportionality.
Guardrail: Do not memorise a formula pattern without quantities, units and conditions, and do not substitute Combined Science coverage for the full separate qualification.
Substituting into an equation before identifying the system, quantities and units.
Guardrail: Do not memorise a formula pattern without quantities, units and conditions, and do not substitute Combined Science coverage for the full separate qualification.
Using a Combined Science checklist or another board's paper allocation as the separate-Physics specification.
Guardrail: Check the live specification, practical section and assessment-series support materials before final revision or timed practice.
Memory anchors
Elastic deformation
A reversible change of shape.
Spring constant
Force per unit extension in the proportional region.
Limit of proportionality
The point beyond which force and extension cease to be directly proportional.
Deformation, Springs and Elastic Energy: method
Zero the length measurement, calculate extension and identify the proportional region before using a spring constant.
Deformation, Springs and Elastic Energy: check
Separate total length from extension and force from mass.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A spring returns to its original length after a small load is removed. What type of deformation occurred?
A spring is 12.0 cm long unloaded and 15.5 cm under load. What is its extension?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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