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Energy and pulleys (Atwood's machine i think)

  1. Apr 29, 2010 #1
    1. The problem statement, all variables and given/known data

    The pulley in the diagram has a radius of 0.160 m and a moment of inertia 0.480 kg.m². The rope does not slip on the pulley rim. Use energy methods to calculate the speed of the 4.00 kg block just before it strikes the floor.

    2. Relevant equations



    3. The attempt at a solution
    ok so Ive already had a lot of help from physics-forums on this and thanks to that ive solved it. I got a value of 3.182m/s could someone please check this.
     
  2. jcsd
  3. Apr 29, 2010 #2
    This can't be worked from the information given; the diagram would be helpful.
     
  4. Apr 29, 2010 #3
    sorry here it is
     

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