* Source of the disturbance: This is the object or action that initiates the wave.
* Example: A guitar string vibrating, a tuning fork struck, or a person shaking a rope.
* Frequency: The number of wave cycles (complete oscillations) that pass a given point per second.
* Units: Hertz (Hz)
How the source influences frequency:
* Vibrating Object's Frequency: The frequency of a mechanical wave is directly determined by the frequency at which the source vibrates.
* Example: If a guitar string vibrates 440 times per second, the sound wave it produces will also have a frequency of 440 Hz.
* Other Factors: While the source's frequency is the primary determinant, factors like the medium's properties (density, elasticity) can also influence the wave's frequency slightly.
Key Point: The frequency of a mechanical wave is fundamentally dictated by how often the source of the disturbance repeats its motion.
