- Determine the highest frequency of audible sound. Adjustable
whistle produces mostly frequencies inaudible to us. Lowering the pitch brings
the sound into most people’s audible range. - Located in L02,
frequency
Chladni Plates
- Determine resonant frequencies of square and circular plates,
and circular hoop. Examine modes of vibration at any frequency. Sand collects
along the nodal lines of wave patterns, revealing clear and beautiful pictures
of various modes of vibration. This one is a crowd pleaser. - Located in L02, section C2.
Driven Oscillator
When the sine wave generator is tuned to the right freequency ( the natural frequency of the mass-spring system) the mass oscillates with very large amplitude. When generator is not tuned to the natural frequency of the spring (even if off by .1 Hz), oscillation amplitude is very small.
Location
- Pasco Sine Wave Generator and Driver: L35, section C3
- Masses: L35, section D1
- Ring Stand: L35, section A
- Spring: L35, section C2