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phys: centrifugal force

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eggy 2020-11-17 16:52:48 -05:00
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@ -568,6 +568,9 @@ $$v=\frac{2\pi r}{T}$$
### Centripetal force/acceleration
!!! warning
**Centrifugal** force is a **fictitious** (psuedo) force used to explain movement opposite the predicted acceleration in a circular frame of reference. The phenomenon is clearly explained from an external field of reference by Newton's first law of motion.
Centripetal acceleration ($\vec{a}_c$) is the acceleration causing an object to move in a circle. An object with uniform circular motion has a centripetal acceleration with constant **magnitude**.
$$|\vec{a}_c|=\frac{v^2}{r}$$