pendulum

aneat1

Driven Pendulum

driven pend 2

driven pend

  • 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.
alight2

Elastic Pendulum

Video Player

 

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

aneat1

Pendulum Wave

 

Pendulum Wave Demo Picture

  • 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