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Homework Help: Angular frequency

  1. Jul 21, 2007 #1
    1. The problem statement, all variables and given/known data

    A uniform disk of radius 1.4m and mass 2.6kg is suspended from a pivot 0.35m above its center of mass. Find the angular frequency w for small oscillations.

    2. Relevant equations

    w = 2 x pi x f = sqrt (k/m)

    3. The attempt at a solution

    Is this the equation I would use to solve this problem? Or does moment of inertia have to be considered also?
  2. jcsd
  3. Jul 21, 2007 #2

    Doc Al

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    Staff: Mentor

    This is a physical pendulum. (Look it up!) You'll need to compute the rotational inertia about the pivot point.
  4. Jul 21, 2007 #3

    Meir Achuz

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    Science Advisor
    Homework Helper
    Gold Member

    Use the parallel axis theorem to find the moment of inertia of the disk about the pivot point.
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