Explanation
- It is the proportionality constant of Hook's law that is described for the regainable deformation of spring and written as "\\small F= kx", "\\small k: \\text{the spring constant}".
- Dimension can be found as
"\\qquad\\qquad\n\\begin{aligned}\n\\small [k]&=\\small \\frac{[F]}{[x]}=\\frac{MLT^{-2}}{L}=MT^{-2}\n\\end{aligned}"
- Unit is commonly written as "\\small Nm^{-1}"
- Stiffness of a spring increases as the string constant increases & vice-versa.
- It is unique to a given spring & varies between springs with the dimension & the material they are made of.
- This can be understood by comparing it with the general explanation to the elastic behavior of matter which is written as "\\small \\sigma=E\\epsilon \\to \\large \\frac{F}{A} \\small =Y\\large\\frac{e}{L}\\small\\to F=\\large \\frac{AY}{L}\\small \\implies k=\\large \\frac{AY}{L}"
- This form is applicable for all the solid substances within their proportionality limits but the name "spring constant" is usually used for springs only as for a given spring it is constant & noo need of describing the behavior in terms of A, Y or L
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