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Homework Help: Question on elementary statics multiple choice

  1. May 7, 2016 #1
    1. The problem statement, all variables and given/known data
    Untitled 2.jpg

    2. Relevant equations
    sum of torques = 0

    3. The attempt at a solution
    So I tried to put the torques into the equation:

    Sum torques = mgL - T *sin(theta) * (L-x) = 0.

    Solving for the T gave me [mgL]/[ (L-x) * sin(theta) ]. This is not an option in the answers.
    Could anyone please help me out in understanding where I possibly derailed, and why the authors think the answer is 4. Thanks in advance!
  2. jcsd
  3. May 7, 2016 #2


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    Staff Emeritus
    Science Advisor
    Homework Helper

    What if answer 4) has a typo, and it should read: ##\frac{mgL}{(L-x)sin\, \theta}## ?
  4. May 8, 2016 #3
    If yes, then that is the answer. The test questions are written by some crummy authors [thanks a lot whoever you are!]
  5. May 8, 2016 #4
    Thanks for the help!
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