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Question about equal torques

  1. Dec 9, 2006 #1
    http://img208.imageshack.us/img208/392/untitledsx2.png [Broken]

    this one seems so simple...i know the answer is 3 and 4; however, I do not know how my book came to that conclusion. can anyone explain to me exactly what is going on in the above diagram? Thanks
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Dec 9, 2006 #2


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    Look at each pair of forces and at the pair of torques it would produce. Focus on the magnitudes of the force vectors and on their distance from the axis.
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