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Homework Help: Conical Pendulum

  1. Jun 30, 2007 #1
    1. The problem statement, all variables and given/known data

    Consider 2 conical pendulums. The first one has mass M and length L and the second has mass 4M and Length 4L. For both parts the angle theta is 33 degrees. The ratio of the tangential speeds of the two circular motions V2/V1 is?

    2. Relevant equations

    I know that tan(theta) = V^2/rg. I rearranged the equation to get V = square root of [gtan(theta)/r], where r = Lsin(theta). I keep getting the ratio 1/2, but it's wrong. Can someone please point out my mistake?

    3. The attempt at a solution

  2. jcsd
  3. Jun 30, 2007 #2


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    I'm guessing you found the ratio of V1/V2 to be 1/2, but the question is asking for V2/V1 :wink:
    I think that's the only problem.
  4. Jun 30, 2007 #3
    lol, thank you so much! :) You're a great help!
  5. Jul 1, 2007 #4


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    Glad I could help!
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