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Homework Help: Two springs together more elastic?

  1. Apr 12, 2008 #1
    Based on the equation: 1/ktot = 1/k1 + 1/k2
    Why is it that the reciprocal of the total spring force is equal to the reciprocals of each spring constants??
    I know how to derive the equation, but what is the physics behind it??
    The total spring constant is much less than those of the two individual springs... smaller k means that the spring is more elastic... why does two combined springs cause the elasticity to increase??
    I know I'm asking a lot of questions.. but any help would be appreciated! :)
  2. jcsd
  3. Apr 12, 2008 #2


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