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Vectors Help!

  1. Feb 4, 2009 #1
    1. The problem statement, all variables and given/known data
    If a tug is pulling a ship and its cable pops it is observed that the tug speeds up while the ship slows down, explain what principle is observed and why energy is NOT conserved.

    2. Relevant equations

    3. The attempt at a solution

    Principle Of moments and i don't know why energy is NOT conserved
  2. jcsd
  3. Feb 4, 2009 #2


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    Staff: Mentor

    Don't think moments are involved, but I could be missing something.

    Start by thinking of both objects being on a frictionless plane, and you cut the rope....

    Then add in friction and think about what happens.

    Is water anything like friction?

    EDIT -- Welcome to the PF, BTW!
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