Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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:

    • 3.jpg
      File size:
      12.9 KB
  2. jcsd
  3. Mar 8, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper

    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:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook