PIRA Code(s): 3A10.20
Set up time:1 minute
Operation: Move the weight along the hacksaw blade. Pull back on the blade and release. When the weight is at the top of the blade the frequency is smaller compared to when the weight is at the bottom.
Physics and Science Concepts: Oscillations
Safety: Edge of blade may be sharp.

PIRA Code(s): 3B20.11
Set up time:2 minutes
Operation: Lay the slinky down on the ground and push it back and forth lengthwise to make longitudinal waves.
Physics and Science Concepts: Longitudinal Waves
Safety: Ends of slinky may be sharp or may tangle.