1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Pendulum driven by combination of horizontal and vertical excitation!

  1. Oct 3, 2009 #1
    Hello there,

    Could some one help me to find equations of motions of this problem attached to this message?

    thanks a lot


    Attached Files:

  2. jcsd
  3. Oct 3, 2009 #2


    User Avatar
    Gold Member

    The technical name of that setup is a parametrically driven pendulum. The suspension point moves up and slightly, in a sinusoidal pattern. When the driving frequency is an exact match for the natural frequency of the pendulum the drive will sustain the pendulum oscillation.

    A team of millersville University has build several small Foucault pendulums with parametric drive. See their "[URL [Broken]discussion[/URL] of equations of motion for a parametrically driven pendulum..

    Last edited by a moderator: May 4, 2017
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook