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Problem with Dynamics! H.E.L.P please

  1. Jan 6, 2005 #1
    "What is the tension of the rope if 2 boys pull it in opposite directions with equal forces of 40N?"

    I guess it is 40N but not sure why.

    THX for help.
  2. jcsd
  3. Jan 6, 2005 #2


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    Every piece of the rope is also in equilibrium, (not just the WHOLE rope)!
    So, look at the half-rope with one boy at one end.
    The half-rope is in equilibrium, hence, the rest of the rope must act upon it with a tension equal to....?
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