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Loop the loop question, given only radius.

  1. Feb 27, 2012 #1
    How fast must a plan fly in a loop-de-loop if the pilot experiences no force from either the seat or the safety belt when he is at the top of the loop?

    I just need to be pointed in the right direction. Thanks in advance for your help.
     
    Last edited: Feb 27, 2012
  2. jcsd
  3. Feb 27, 2012 #2
    His weight becomes the centripetal force.
     
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