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Referrence of laws in my experiment

  1. Apr 25, 2009 #1
    I've got a SAC which is my own experiment. The experiment is measure the Sag in a supported beam (A.K.A putting weights on top of a flexible ruler supported at both ends and measuring how much the ruler bent)

    Since i have to make referrence to law's and elaborate how the force affects the ruler, which of these following laws/methods should i make a mention of?

    - Hooke's law (Not sure)
    - Newton's third law (I think yes)
    - Elastic potential energy (?)


    here is a few pictures showing my experiment. Hopefully you can all grasp the visual concept of my experiment from these.
    http://img14.imageshack.us/img14/3015/variableweight.jpg [Broken]


    and another:

    http://img14.imageshack.us/img14/7941/variablelength.jpg [Broken]


    Anything else i should make mention of?
    any help would be greatly appreciated.
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
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