Work done, springs and elastic energy

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Calculate work done by a force using $W=Fs$ when a force causes a displacement in the direction of the force.
Explain work done as energy transferred by a force and identify the energy stores involved in common situations.
Describe extension, compression and deformation of springs, and apply Hooke’s law to linear regions where force is proportional to extension.

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Distinguish between elastic deformation and inelastic deformation, including the idea of a limit of proportionality and permanent change in shape.

Calculate elastic potential energy stored in a stretched or compressed spring using $$E_e=\frac{1}{2}ke^2$$ and relate this to the area under a force–extension graph where required.

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