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Rotational Energy and Kinetic Energy

  1. May 17, 2010 #1
    1. The problem statement, all variables and given/known data
    [PLAIN]http://img189.imageshack.us/img189/5994/energyq.png [Broken]

    2. Relevant equations

    This is a question by Monash University...i need to do part b by Energy conservation equations...but i don;t get the answer from that..
    plzz tell me how to do part b by Energy conservation equations...
    thank u

    3. The attempt at a solution
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. May 17, 2010 #2
    Do you know how to set up a Lagrangian?
  4. May 18, 2010 #3
    no whts that?
  5. May 19, 2010 #4
    y is no body helping me???
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