Brian Lamore at The Village School in Houston, TX, crafted a simple experiment on string vibration. Lamore’s students connected a rubber band to a Dual-Range Force Sensor to create a cheap “guitar” with which to study the relationship between tension and frequency. Students plucked the rubber band and monitored the force readings at 1000 Hz.

Using a rubber band in this way introduces several factors of complexity, such as:

  • change in mass per unit length
  • change not always proceeding according to Hooke’s law
  • temperature sensitivity

The situation offers opportunities for possible extended investigations.