Caa Voyage

Robert Hooke was a true polymath who invented the balance spring and escapement mechanisms in watches and clocks, built Bedlam and also named the cell in biology. Hooke was more of an experimenter than a mathematician and it was while experimenting with springs that he discovered the law for which he is most famous. Hooke’s law says that the amount by which a spring extends is proportional to the force which is acting upon it.

Elasticity

Materials that obey Hooke’s law are known as ‘elastic’. As well as stretching, elastic materials are characterised by the fact that they return to their original shape when the force acting on them is removed.

According to Hooke’s law, an elastic material always requires the same amount of force to stretch it by some length. This necessary force depends on the material’s elastic modulus (effectively, the material’s stiffness). A stiff material needs a large force to extend while a more pliable material needs less force.

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