Editing Angular frequency (section)

=== Circular motion ===
{{main|Circular motion}}
In a rotating or orbiting object, there is a relation between distance from the axis, <math>r</math>, [[tangential speed]], <math>v</math>, and the angular frequency of the rotation. During one period, <math>T</math>, a body in circular motion travels a distance <math>vT</math>. This distance is also equal to the circumference of the path traced out by the body, <math>2\pi r</math>. Setting these two quantities equal, and recalling the link between period and angular frequency we obtain: <math>\omega = v/r.</math> Circular motion on the unit circle is given by
<math display="block">\omega = \frac{2 \pi}{T} = {2 \pi f} , </math>
where:
* ''ω'' is the angular frequency (SI unit: [[radians per second]]),
* ''T'' is the [[Frequency|period]] (SI unit: [[second]]s),
* ''f'' is the [[ordinary frequency]] (SI unit: [[hertz]]).