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Need help with a centripetal force question.

  1. Oct 15, 2016 #1
    1. The problem statement, all variables and given/known data
    media%2F3b2%2F3b287040-68ea-4c63-a733-e37f7edfa549%2Fphpfk0q1Y.png

    2. Relevant equations
    f = mg
    N = mw^2R

    3. The attempt at a solution

    Is this method and answer correct? The answer in my solution sheet is different so i'm wondering where i went wrong

    media%2Fe5f%2Fe5f3ab52-02ad-4de5-a10e-f229b2bfbe42%2Fphpl1TAku.png
     
  2. jcsd
  3. Oct 15, 2016 #2

    haruspex

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    Your work all looks correct to me, except that you do not need the trailing 0 in the answer.
     
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