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Question from our Lab today on Friction

  1. Oct 14, 2008 #1
    1. The problem statement, all variables and given/known data
    Assuming that f=mu(N), show that the cofficient of (rolling) friction for the
    car moving down the inclined plane with a constant speed is given by
    mu=tan(theta) - m2/mc cos(theta)(Use symbols, not numbers.)


    2. Relevant equations



    3. The attempt at a solution
    Can someone explain any of this so I can understand what they are asking.
    I can't get started because I don't really understand it.
    Thanks,
    Kevin
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Oct 15, 2008 #2

    tiny-tim

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    Science Advisor
    Homework Helper

    rolling

    Hi Kevin! :smile:

    (have a mu: µ and a theta: θ :wink:)
    hmm … fair point! :biggrin:

    I wish professors would explain rolling more carefully. :rolleyes:

    Before I go any further, can you say what m2 and mc are (I can guess what θ is :wink:), and show us a bit more of the question? :smile:
     
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