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Homework Help: Kinematics of rigid bodies 2

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

    At the instant shown, bar AB has a constant angular velocity of 25 rad/s counterclockwise. Dtermine at that instant a) the angular velocity of the rectangular plate FBDH, b) the velocity of point F

    2. Relevant equations

    Va = Vb + Wba x Ra/b

    3. The attempt at a solution

    Found Vb with the above formula which equals to 507.5j. And i think i should use the instantaneous centre of rotation method but i dont know how to find it.
    Can anyone help me to solve this problem?

    Attached Files:

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  2. jcsd
  3. Mar 8, 2010 #2


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    Science Advisor
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    Hi 385sk117! :smile:

    Do you mean you don't know how to find the instantaneous centre of rotation?

    You know that B is moving perpendicular to AB, and D is moving perpendicular to DE. :wink:
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