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Velocity of a rolling body down an inclined plane

  1. Apr 4, 2008 #1
    Can anyone tell me the formula of calculating the velocity of a rolling body down an inclined plane?Please state the quantities as well.
     
  2. jcsd
  3. Apr 4, 2008 #2

    Hootenanny

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    Is there friction? Do we take into account air resistance? We need more information.
     
  4. Apr 4, 2008 #3
    No there is no friction and air resistance.It's chapter is rotational motion.
     
  5. Apr 4, 2008 #4

    Hootenanny

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    If there is no friction then the body will not roll down the incline, it will slide.
     
  6. Apr 4, 2008 #5
    I think we have to consider friction and the radius of gyartion is involved there.
     
  7. Apr 4, 2008 #6

    Hootenanny

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    Further information is still required. Please state the full question with all known information.
     
  8. Apr 4, 2008 #7

    Doc Al

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    I suspect you mean that there's no energy dissipated due to friction, not that there's no friction. (No slipping.)

    In any case, don't just go hunting for a formula; figure it out from basic principles. What forces act on the body? What's the rotational inertia?
     
  9. Apr 4, 2008 #8
    I have been given the information about the acceleration of a rolling body down an inclined plane as
    a=gsintheta/1+k^2/R^2
    But I really want to know the formula of that body when it actually reaches down the inclined plane.
     
  10. Apr 4, 2008 #9

    Hootenanny

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    I'm not quite sure I understand, you want an equation of motion for when the body has left the inclined plane and is now rolling along a horizontal surface?
     
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