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Homework Help: Proving a 2D slider crank mechanism fits the Gruebler's Equation

  1. May 12, 2009 #1
    1. The problem statement, all variables and given/known data
    Need to prove that a slider crank mechanism fits the Grueblers eqaution, already done for a four bar mechanism no problem, however having some serious problems with the slider crank. If l is the number of links and j is the number of joints

    2. Relevant equations
    Grueblers equation is

    3. The attempt at a solution
    Looking at a slider crank mechanism, i deduced that l=4 and j=3, however it does not fit the grueblers equation
  2. jcsd
  3. May 13, 2009 #2
    Slide crank is also a kind of four bar.(You need 4 vector to describe that,if it has offset.)

    The block count one. i=4 , j=4 .
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