BRAINCAKEAngular Speed
The angular speed ω of an object moving in a circle is the angle it turns through per second: ω = Δθ/Δt. The unit is rad s-1.
In one complete revolution the object turns through 2π radians in one time period T, so ω = 2π/T = 2πf, where f is the frequency of rotation.
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Key terms in this lesson
- Angular displacement
- The angle, measured in radians, through which an object has rotated about a fixed point.
More in Circular Motion
- Uniform Circular Motion
- Angular Displacement
- Centripetal Acceleration
- Proof - centripetal acceleration
- Centripetal Force
- On the Road
- The London Eye
- A Spin Dryer
All 9 lessons in Circular Motion · All AQA A-level Physics topics