PURPOSE: To demonstrate one form of SHM.

DESCRIPTION: A weighted cola can floats as shown in a tank of water. When displaced from its equilibrium position and released, it executes SHM. Due to the viscosity of the water, there is considerable damping.

SUGGESTIONS:

REFERENCES: (PIRA unknown.) A derivation and summary of relevant equations is available in the Demonstration Reference File.

EQUIPMENT: Weighted can, aquarium with water.

SETUP TIME: 5 min.