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urp:physfreq
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urp:physfreq [2021-11-08] nerf_herder |
urp:physfreq [2021-11-17] (current) nerf_herder |
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| ====Spring and Lever==== | ====Spring and Lever==== | ||
| **Hooke's law** for springs: F=-kx, k=spring constant, x = displacement | **Hooke's law** for springs: F=-kx, k=spring constant, x = displacement | ||
| + | |||
| + | Spring energy: | ||
| + | * potential energy: U = 1/2 kx², or | ||
| + | * P = mgh (at mass at a given height) | ||
| + | * kinetic energy: K = 1/2 mv² | ||
| + | |||
| + | conservation of energy: potential energy + kinetic energy = constant, for a system | ||
| **Fulcrum**: t = r * f (torque = radius * force) | **Fulcrum**: t = r * f (torque = radius * force) | ||
urp/physfreq.1636341842.txt.gz · Last modified: 2021-11-08 by nerf_herder
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