- Tap pendulum repeatedly with pool noodle (pink thing). If tapping frequency matches swinging frequency, amplitude of swing will increase and become very large. If tapping frequency is too high or too low (i.e., does not match swing frequency), swing amplitude will remain small.
- Pendulum and noodle located in L02, section C1. Ring stand in L35, section A.
pendulum
Elastic Pendulum
When started gently, motion alternates between angular and radial oscillation. The period of the switching can be modified by changing the ratio of the spring’s natural frequency to the pendulum’s natural frequency.
Location: L02, section C1
Coupled pendula
- Located in L02, section C1.
Pendulum Wave
- Aesthetic demonstration based on relationship between period and arm length.
- Use wooden slat to start pendula in unison with equivalent
amplitudes. As pendula cycle through all possible phase relationships, a variety
of wave patterns emerge. - Located in L02, section C-1.
- see: https://www.youtube.com/watch?v=yVkdfJ9PkRQ
Physical Pendulum
- Demonstrate how pendulum’s period is related to distance
between pivot and center of gravity. - Experiment with damped oscillation using magnetic attachment.
- Located in L02, section D.