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What is the magnitude of the torque about his shoulder

  1. Nov 22, 2008 #1
    An athlete at the gym holds a 4.0 steel ball in his hand. His arm is 70 long and has a mass of 4.0
    What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
    What is the magnitude of the torque about his shoulder if he holds his arm straight, but 50 below horizontal?

    I'm lost
     
  2. jcsd
  3. Nov 22, 2008 #2

    LowlyPion

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    Homework Helper

    Re: Torque

    What is the definition of Torque?

    That would be a good start.
     
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