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Spring constant in mass spring combinations

  1. Sep 23, 2013 #1
    1. The problem statement, all variables and given/known data

    How do we derive the total spring constants of different mass spring systems

    2. Relevant equations

    F= kΔx

    3. The attempt at a solution

    series_zps7ddf38f3.jpg
     
  2. jcsd
  3. Sep 23, 2013 #2
    I have just realised this is similar to this thread
    https://www.physicsforums.com/showthread.php?t=711957
    I was told to treat this as F1 = F2 and the displacements are equal.
    I am struggling to convince myself that F(total) = F1=F2
    any help gratefully received
     
  4. Sep 23, 2013 #3
    parrallelLR_zpsec5564bc.jpg

    In the parrallel case I can see how the displacement is the same but again I am confused by the forces.
    I guess I need a couple of spring balances
     
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