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Homework Help: Pendulum Problem

  1. Oct 20, 2008 #1
    1. The problem statement, all variables and given/known data

    I attached a picture of the problem given. In my physics class we never work with numbers we always work with variables.


    Here is a link as well.

    2. Relevant equations

    I have yet to tackle this problem, but I am thinking about using the total work equations. (kinetic, potential, work due to spring etc)

    3. The attempt at a solution

    As stated above, not yet done, but working on an approach before I go head first going about it all wrong.

    Thanks in advance!
  2. jcsd
  3. Oct 21, 2008 #2


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    Homework Helper

    Hi tapeworm,

    Using energy relationships sounds like a good idea; also, you might consider a force diagram at the point where the string goes slack.
  4. Oct 21, 2008 #3
    Im stuck, any suggestions? (when string goes slack) (projectile motion?)
  5. Oct 21, 2008 #4


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    Homework Helper

    That looks right to me; after the string becomes slack, the only force acting on the particle is gravity so it is in free fall, and you can treat it as projectile motion.
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