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Help! Centripetal Force problem

  1. Oct 21, 2012 #1
    Here's the problem. I don't understand how to get the velocity?????

    If you cannot read the attachment it reads:
    An amusement park ride consists of a rotating
    circular platform 8.26 m in diameter from
    which 10 kg seats are suspended at the end
    of 3.9 m massless chains. When the system
    rotates, the chains make an angle of 17.9 with
    the vertical.
    The acceleration of gravity is 9.8 m/s2 .


    I tried finding vx then doing vx*tanθ, but the computer said I was wrong......ANY HELP WOULD BE AMAZING! :frown:
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Oct 21, 2012 #2

    Simon Bridge

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    You need to do a free-body diagram for the seat.
     
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