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Homework Help: Pendulum problem

  1. Apr 23, 2008 #1
    How do you calculate the period of a physical pendulum?
     
    Last edited: Apr 23, 2008
  2. jcsd
  3. Apr 23, 2008 #2
    Hint:

    Calculate moment of inertia.The mass is known.'g' is of course known.

    09ff9df9a015ce202120b68beacf4ef6.png

    where I is the moment of inertia; in this case I = mr^2/2. When θ is small, 7e4b6e2b1820441a10d43da983b3a35c.png and therefore the expression becomes

    62655f30716072ebd74451508dec4546.png
     
    Last edited by a moderator: Apr 23, 2017
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