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Motion in a vertical circle

  1. Sep 24, 2007 #1
    Hey, Simply I want to figure out what produces the reaction force, in this picture i drew, a reaction force appears directing in the same direction as the weight force, any ideas why? Sorry for the bad drawing :yuck:

    The example shows a cyclist going around a loop (upsidedown)

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  2. jcsd
  3. Sep 24, 2007 #2

    Doc Al

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    The track exerts a force on the bike.
  4. Sep 24, 2007 #3
    Oh... its that simple... sorry haha
  5. Sep 24, 2007 #4


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  6. Sep 24, 2007 #5

    Doc Al

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    Yep. The combination of the force of the track and the weight of the bike create the centripetal force that keeps it going in a circle.
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