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Homework Help: Rolling ring!

  1. Jan 19, 2005 #1
    little bit stuck on a problem, here goes:

    A ring of mass 2.4 kg with an inner radius 6cm abd outer radius 8 cm is rolling (without slipping) up an inclined plain that makes an angle of 36.9* with the horizontal. At the moment, the ring is 2m up the plane its speed is 2.8 m/s. The ring continues up the plane for some additional distance then rolls back down. Assuming that the plane is long enough so that the ring does not roll off the top end, how far up the plane does it go?

    thanks!
     
  2. jcsd
  3. Jan 19, 2005 #2

    Tide

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    HINT: Energy is conserved. Remember that the kinetic energy in this case has a translational as well as a rotational component.
     
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