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Force acting on rotatble object

  1. Mar 18, 2005 #1
    Hi everybody,
    I've the following problem:
    I have a force "F" pulling a body at point "P" while the center of gravity of the body is at "A". The Body has a Moment of Inertia of "I" and a mass of "M".

    The question is: What is the acceleration of the centre of gravity and what is the angular acceleration of the body.

    If the centre of gravity would be fixed, I would know what to do, but it is not.
    If "A-P" and "F" would be in linear relation to each other, the solution would be F=M*a, would it not?

    But what happens in general?

    Any help/Ideas?
  2. jcsd
  3. Mar 18, 2005 #2

    Doc Al

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    Staff: Mentor

    translation plus rotation

    That force will produce a translational acceleration of the center of mass (F = ma) as well as exert a torque about the center of mass producing an angular acceleration about the center of mass ([itex]\tau = I \alpha[/itex]).
  4. Mar 18, 2005 #3
    OK, did not know that it is that simple. I thought there would be some special trick to it.
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