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Angular displacement

  1. Mar 5, 2006 #1
    hi,

    how do i work out the angular displacement of ball bearing 0.00765 m in radius over 0.05 meters?

    i need it to work out angular speed.


    thank you
     
  2. jcsd
  3. Mar 5, 2006 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Perhaps you need:

    [tex]d = \theta r[/tex]

    [tex]v = \omega r[/tex]

    Where the angle is measured in radians.
     
  4. Mar 5, 2006 #3
    im doing this piece of work about a ball bearing rolling down an invlined slope and translational kinetic energy + rotational kinetic energy should = potential enegry.

    but im not sure how to work out rotational kinetic energy. im not sure of the equations you just gave me, sorry, a little more help maybe?

    can i not just say that the angular displacement is 0.05 meters? as that is how much we moved the ball bearing back each time?

    thank you, but could i please have a little more help?
     
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