Hooke's law

The balance wheel at the core of many mechanical clocks and watches depends on Hooke's law. Since the torque generated by the coiled spring is proportional to the angle turned by the wheel, its oscillations have a nearly constant period.

Plot of applied force F vs. elongation X for a helical spring according to Hooke's law (red line) and what the actual plot might look like (dashed line). At bottom, pictures of spring states corresponding to some points of the plot; the middle one is in the relaxed state (no force applied).

Hooke's law is a principle of physics that states that the force $F$ needed to extend or compress a spring by some distance $X$ is proportional to that distance. That is: $F = kX$ , where $k$ is a constant factor characteristic of the spring: its stiffness, and $X$ is small compared to the total possible deformation of the spring. The law is named after 17th-century British physicist Robert Hooke. He first stated the law in 1660 as a Latin anagram. He published the solution of his anagram in 1678 as: ut tensio, sic vis ("as the extension, so the force" or "the extension is proportional to the force").

单词	Hookes Law
释义	Hookes Law 英语百科 Hooke's law Hooke's law is a principle of physics that states that the force $F$ needed to extend or compress a spring by some distance $X$ is proportional to that distance. That is: $F = kX$ , where $k$ is a constant factor characteristic of the spring: its stiffness, and $X$ is small compared to the total possible deformation of the spring. The law is named after 17th-century British physicist Robert Hooke. He first stated the law in 1660 as a Latin anagram. He published the solution of his anagram in 1678 as: ut tensio, sic vis ("as the extension, so the force" or "the extension is proportional to the force").
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Hookes Law

Hooke's law