Period & Frequency in Circular Motion
- Frequency, f, is defined as:
The number of complete oscillations per unit time
- It is measured in Hertz (Hz) and is defined by the equation
- Time period, T, is defined as:
The time taken for one complete oscillation, in seconds
- One complete oscillation is defined as:
The time taken for the oscillator to pass the equilibrium from one side and back again fully from the other side
- If a circle has a radius r, then the distance through which an object moves as it completes one rotation is equal to the circumference of the circle = 2πr
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The speed of an object moving in a circle is therefore equal to:
