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Forces & Elasticity – Hooke’s law, spring constant, elastic potential energy

Forces can change the shape of objects.

Hooke’s Law

The extension of an elastic object (like a spring) is directly proportional to the force applied, provided the limit of proportionality is not exceeded.

       Force            =             spring constant           x            extension

(newtons, N)           ( newtons/metre, N/m)                 (metres, m)

hookes law pic

hookes law graph