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Homework Help: Simple Harmonic Motion - Period (T)

  1. Nov 28, 2007 #1
    [SOLVED] Simple Harmonic Motion - Period (T)

    1. A pendulum oscillates with a period T.

    If both the mass of the bob and the length of the pendulum are doubled, the new period will be _____.

    2. T = 2(pi) x rad (k/m)

    3. Since L is not a part of the equation, it shouldn't affect the period - right? If that's true, then shouldn't the new period be: T/rad (2) ?

    Sorry, I don't know how to insert symbols (i.e. pi and rad).
  2. jcsd
  3. Nov 28, 2007 #2


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    That equation is for the time period of a spring. The equation for a pendulum is:

    [tex] T = 2\pi \sqrt{\frac{L}{g}} [/tex]
  4. Nov 28, 2007 #3
    Thanks. I just figured that out after 5 mins of Googling. My professor hasn't gone over that yet. I guess that is what Friday's lecture is about...since this HW isn't due unti Sunday. Thanks again!
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