BRAINCAKEInvestigating the Factors Affecting Fundamental Frequency
This practical investigates how the fundamental frequency of a string depends on its length, tension and mass per unit length.
Apparatus: a string is tied to a vibration generator, passes over a wooden bridge and a pulley at the edge of the bench, and has a mass hanger on the end. The vibration generator is driven by a signal generator. The tension equals the weight of the hanging masses, T = mg. The vibrating length l is from the vibration generator to the bridge.
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Key terms in this lesson
- vibration generator
- A device that vibrates a string or wire at a chosen, adjustable frequency, driven by a signal generator.
More in Waves
- Stationary Waves
- Demonstrating Stationary Waves
- Waves on a Stretched String
- Speed and Frequency of Waves on a Stretched String
- Fundamental Frequency
- Diffraction
- Factors Affecting Diffraction
- Single Slit Diffraction
All 22 lessons in Waves · All Edexcel AS-level Physics topics