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Circular Motion of a bucket

  1. Dec 23, 2014 #1
    1. The problem statement, all variables and given/known data

    A 3.75 kg bucket pile of water is swung in a vertical circle. If the speed of the bucket at the top of the loop is 6.20 m/s, then the radius of the largest circle through which this pail could move without the water leaving the bottom of the pail would be what?

    m = 3.75 kg

    v = 6.20 m/s

    r = ?

    I was thinking to use Fc = mv^2/r but I'm not given Fc. I'm not sure what formula I should use or how to go about solving this question. Any help would be greatly appreciated.
     
  2. jcsd
  3. Dec 23, 2014 #2

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    Step 1 read the question. Step 2 is to reread the question for the information you need.
     
  4. Dec 23, 2014 #3
    What do you mean?
     
  5. Dec 23, 2014 #4

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    It's stated all over the forum that you are going to have to do some of the work. If I quote a piece of your original post, that is what is called a "hint."
     
  6. Dec 23, 2014 #5
    Well I sort of figured that. I'm not trying to get out of doing the work, I'm just not sure what formula I should use or how I should go about the question.
     
  7. Dec 23, 2014 #6

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    Does the question place you specifically on the Moon? Or Mars? Or elsewhere in the solar system? You may assume that you are on the Earth's surface.
     
  8. Dec 23, 2014 #7
    So g = -9.81. Is Fc equal to Fg or something like that then ?
     
  9. Dec 23, 2014 #8

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    Makes a good place to start.
     
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