Principle
A tensioned metal string is made to vibrate. The vibrations of
the string are optically scanned, the vibration process observed on
the oscilloscope and the dependence of the frequency on the string
tension and string length and the density of the material are
investigated.
Benefits
- Investigation of the dependency of the vibration frequencies of 4 parameters in one experiment
- Cross-curricularly interesting for music lessons
Tasks
- To measure the frequency of a string (e.g. constantan, 0.4 mm
dia.) as a function of the tensioning force and the length of the
string.
- To measure the frequency for various types and cross-sections
of string, at a fixed tension and string length.
What you can learn about
- Natural vibration
- Mass-spring system
- Harmonic sound intervals
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