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Torque equilibrium

  1. Oct 23, 2008 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    3. The attempt at a solution

    i can't really visualize the model of the bar. But isn't the force needed to balance out the bar, just the sum of the weight of the bar, and the two masses on the left and right?
  2. jcsd
  3. Oct 24, 2008 #2


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    Sure it is. I assume next they will ask where that force must be applied so the bar is in rotational equilibrium as well. Then you need the torques.
  4. Oct 24, 2008 #3
    yeah that is the next question. Do you have any pointers on this one? How does the mass of the bar contribute to the torque?
  5. Oct 24, 2008 #4


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    Only forces contribute to the torque, not masses. Just pick an origin, add them up, set to zero and solve for the unknown position.
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