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Pulley w 3 masses

  1. Nov 1, 2011 #1
    1. The problem statement, all variables and given/known data


    An green hoop with mass mh = 2.4 kg and radius Rh = 0.12 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.4 kg and radius Rd = 0.11 m. The other end of the string is attached to a massless axel through the center of an orange sphere on a flat horizontal surface that rolls without slipping and has mass ms = 4.2 kg and radius Rs = 0.25 m. The system is released from rest.

    1)What is magnitude of the linear acceleration of the hoop?


    2. Relevant equations



    3. The attempt at a solution

    I have no idea, would love someone to explain all the very elementary steps, we have never even looked at taking the mass of the pulley into account!
     
  2. jcsd
  3. Nov 2, 2011 #2

    Doc Al

    User Avatar

    Staff: Mentor

    How would you solve it if the pulley were massless?
     
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