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Quick Question About Torque

  1. Oct 24, 2012 #1

    MG5

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    In this picture...

    12-p-025.gif

    Why do T2 and T3 not produce any torque? Something to do with it being in equilibrium? Thanks.
     
  2. jcsd
  3. Oct 24, 2012 #2

    haruspex

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    What point are you taking moments about?
     
  4. Oct 24, 2012 #3

    PhanthomJay

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    Torque in this example has no meaning unless you reference it to a point or axis. T2 and T3 have no torque about the left end, but there may be plenty of torque abot some other point. Although this system is in equilibrium where the sum of torques about any point must sum to 0, the concept of torque about a point applies even for systems that are not in equilibrium.
     
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