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<p><a href="page.php?w=elastic_potential_energy">elastic potential energy</a>, by straining the bonds between the <a href="page.php?w=atom">atom</a>s of an <a href="page.php?w=Elasticity_%28physics%29">elastic</a> material.</p>

<p>Hooke's law of <a href="page.php?w=theory_of_elasticity">elasticity</a> states that the extension of an elastic rod (its distended length minus its relaxed length) is linearly proportional to its <a href="page.php?w=Tension_%28mechanics%29">tension</a>, the <a href="page.php?w=force">force</a> used to stretch it. Similarly,</p><p>
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