Oscillations and Waves > Oscillations > Nonlinear
Systems
DCS# 3A95.70
PARAMETRIC
OSCILLATOR
APPARATUS
parametric oscillator
101-02-C2
DC power supply
202-08-D
DESCRIPTION
The adjustable speed motor
periodically
changes the length of the pendulum. Resonance occurs when the
driver
frequency is twice the natural frequency of the pendulum.
NOTES
This can be set up as an interactive display using the modified DC
power
supply.