Featured in PASCO’s Advanced Physics Teacher Guide
This manual features over 30 College Board curriculum and AP Physics exam inspired lab activities.
Use tuning forks and a plastic pipe to determine an experimental value for the speed of sound in air.
Sound waves produced by a tuning fork travel through a pipe closed at one end, establishing standing waves inside the pipe (resonance). Design and conduct an experiment that uses the mathematical relationship between air column length and resonance frequency along with a graphical method to determine an experimental value for the speed of sound in air.
Students gain experience conducting the following procedures:
Graduated cylinder, 1-L, or other tall water reservoir
Meter stick - 5
Plastic pipe, both ends open, 3 cm or larger diameter
Tuning Forks (each with different frequency) - 5
Water to fill reservoir
This experiment may require software and an interface for data collection.