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Torque, torque, torque

  1. Jun 4, 2009 #1
    1. The problem statement, all variables and given/known data

    A rod can pivot at one end and is free to rotate without friction about a vertical axis. A force F is applied at the other end, at an angle theta to the rod. If F were to be applied perpendicular to the rod, at what distance d from the axis of rotation should it be applied in order to produce the same torque t?

    2. Relevant equations

    t = rF

    3. The attempt at a solution

    My answer: d = Lsin(theta).

    Is that correct or am I missing something?
     
  2. jcsd
  3. Jun 4, 2009 #2

    LowlyPion

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    Homework Helper

    If the force is applied horizontally this would be true.

    When the angle is 90 degrees the force would be fully engaged in developing torque at that displacement.
     
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