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Springs in Parallel

  1. Sep 1, 2013 #1
    When springs in parallel are replaced by a new spring of a new effective spring constant, for the proof of this, i.e
    keff=k1+k2

    Why do we assume the extension in the springs to be equal?
     
  2. jcsd
  3. Sep 1, 2013 #2

    Pythagorean

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    If you imagine two adjacent blocks being held together by two springs, if you stretch the blocks apart, the springs stretch equally.
     
  4. Sep 1, 2013 #3
    In the attachment, why is the extension of the springs same?
     

    Attached Files:

  5. Sep 1, 2013 #4

    Pythagorean

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    For the sake of the derivation, you assume that the little block is pulled evenly so that both springs are extended the same amount.
     
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