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AQA · GCSE · Combined Science · Higher

Extension, force and spring constant equation

Q01.4 1 mark

Write down the equation which links extension (ee), force (FF) and spring constant (kk).

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Marking points

  1. 1 State F=keF=ke, or equivalently force = spring constant × extension.

Full-mark answer

F=keF=ke

Why this answer loses marks

F=keF=\frac{k}{e}

This gives an incorrect relationship between force, spring constant and extension.

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