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Basic question on torque

  1. Nov 6, 2011 #1
    1. The problem statement, all variables and given/known data

    Torque is a minimum when the direction of a force is parallel to the radius vector.
    True or False

    2. Relevant equations

    None

    3. The attempt at a solution
    I say true because my book gave an example of a seesaw, where if you push down perpendicular to the radius, the torque will be the largest. Would you guys agree?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Nov 6, 2011 #2

    rock.freak667

    User Avatar
    Homework Helper

    Yes that is true, when the force is parallel to the radius vector, the torque is zero by way of the definition of torque T=r x F where x means the cross product.
     
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