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Homework Help: Force needed to pull the string

  1. Nov 30, 2005 #1
    A mass M whirls around on a string which passes through a ring .Neglect gravity.Initially the mass is distance Ro from the center and is revolving at angular velocity Wo.The string is pulled with constant velocity V starting at t=0 so that the radial distance to the mass decreases.Draw a force diagram and obtain a differential equation for W.Find
    (1) W(t)
    (2) the force needed to pull the string
  2. jcsd
  3. Nov 30, 2005 #2


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