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Homework Help: Bifilar pendulum motion

  1. Jun 14, 2012 #1
    Heyy guys,

    I have and EEI to do on a bifilar pendulum. Essentially a bifilar pendulum is acheived by two parallel strings instead of one. I have already built the device but dont know how the motion should be. Shourd it be farwards adn backwars? or side to side? or rotate?

    Thanks in advance:)
  2. jcsd
  3. Jun 14, 2012 #2


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    welcome to pf!

    heyy joelKID984! welcome to pf! :smile:

    "bifilar" simply means "having two threads", so it could be used in any of those three ways

    but i believe it's usually operated as a torsional pendulum …

    for pictures, do a google image-search for "bifilar pendulum" :wink:
  4. Jul 8, 2012 #3
    how does a bifilar pendulum relate to the world


    im doing an EEI on a bifilar pendulum and im on one of the lest sections of the report that quite important as it shows critical thinking. i have to discuss how the bifilar pendulum relates to the real world.

    essentially a bifilar pndulum if a pendulum with two parallel filaments attached to a body instead of one. i know that a bifilar pendulum is used to measure moment of inertia, but how can it relate to the real world.

  5. Jul 10, 2012 #4
    Re: how does a bifilar pendulum relate to the world

    Other threads on bifilar pendulum here on PF : http://www.google.com/search?q=bifi....,cf.osb&fp=b9a4a844c6dcd97f&biw=1024&bih=578

    This site , I think beautifully explains your case : http://www.egglescliffe.org.uk/physics/gravitation/bifilar/bif.html

    Here is another site : http://www.me.utexas.edu/~me244L/labs/filar/filaroverview.html
  6. Jul 10, 2012 #5
    thanks guys :):) for hte help. but some guy keeps giving me warnings for no reason soo....
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