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Homework Help: Kinematics of rigid body

  1. Mar 8, 2010 #1
    1. The problem statement, all variables and given/known data

    Three belts move over two pulleys without slipping in the speed reduction system. Point A on the input belt moves to the right with a constant spped of 0.6m/s. Determin the velocity of point C on the output belt, and the acceleration of point B on the output pulley.

    2. Relevant equations

    Va = Vo + wr
    where Vo is the velocity of center of left pulley which is equals to 0m/s
    so Va = wr

    3. The attempt at a solution

    with the above equation I found out that the angular velocity of the pulley is
    0.6m/s = (0.1)w
    w = 6rad/s clockwise direction
    and this means that the pulley is rotating with the speed of 6 x radious of bigger part of pulley = 0.6m/s and from the picture we can deduce that the pulley on the left also rotating with same speed.
    This is my assumption and i dont think this is right, and even though this is right how can i find the Vc and acceleration at point B?
     

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  2. jcsd
  3. Mar 8, 2010 #2
    is Vc = 0.3m/s
    and acceleration at point B = 0?
     
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