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Homework Help: Please help, very confused

  1. Apr 24, 2008 #1
    1. The problem statement, all variables and given/known data

    The thigh muscle that bends the knee is attached to the bone 2cm away from the fulcrum and generates a force of 400N. The distance between the weight and the fulcrum is 40cm. Calculate the upward force at the point where the muscle in the thigh contracts.

    2. Relevant equations
    No idea, i am really confused.

    3. The attempt at a solution
  2. jcsd
  3. Apr 24, 2008 #2


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    Staff: Mentor

    What can you tell us about torques? Can you sketch a diagram showing the problem statement, and label the forces, where they act, and how they make torques?
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