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Tension of an object in a rope

  1. Jan 2, 2013 #1
    1. The problem statement, all variables and given/known data
    An object with mass m is attached to a fixed structure with a rope with dimension R like in the figure. The object is dropped. Why is the tension in the lowest point of the movement 3mg?

  2. jcsd
  3. Jan 2, 2013 #2
    Using conservation of energy, what is the velocity of the mass at the lowest point? What is the radial acceleration at the lowest point? Treating the mass as a free body, what is the radial component of the force balance at the lowest point?
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