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urp:physfreq
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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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) | ||
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| If y is the displacement from this equilibrium position the total restoring force will be Mg − k(yₒ + y) = −ky | If y is the displacement from this equilibrium position the total restoring force will be Mg − k(yₒ + y) = −ky | ||
| + | ---------- | ||
| + | Back to the [[Physics]] page or the [[00_start|Start]] page. | ||
urp/physfreq.1636341751.txt.gz · Last modified: 2021-11-08 by nerf_herder
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