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The drawing shows a lower leg being exercised. It has a 49 N weight a

  1. Apr 20, 2013 #1
    1. The problem statement, all variables and given/known data

    The drawing shows a lower leg being exercised. It has a 49 N weight
    attached to the foot and is extended at an angle θ with respect to the
    vertical. Consider a rotational axis at the knee.
    a. When o
    θ = 90.0 , find the magnitude of the torque that the
    weight creates

    2. Relevant equations



    3. The attempt at a solution

    Shouldn't the angle be the force (weight) with respect to r? Here is r with respect to r perpendicular, or did I get the labels wrong? If it is the case, should we solve the angle by 90 - theta?

    I get the answer but I dont get the concept. Can someone help me with the labelling?
    Great appreciated if you can explain it on the diagram, thanks!
     

    Attached Files:

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  2. jcsd
  3. Apr 20, 2013 #2
    i 've figured out!! don't think i can delete the post..
     
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