- #1
MarkH748
- 9
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Hi guys. I looking at a vibrations problem with 2 springs in it (System A). I need to find an overall value for the stiffness K to find the natural frequency of the system. I know that normally when 2 springs are in series I should get the sum of (I/Ki)^-1 which would give me an equivilant stiffness of K/2 in this case (System C). But when I take moments about the pivot point og the rod O it makes more sense to me for it to be 2K (System B). Here are some sketches I made.
Can anyone shed some light on this as I'm unsure of which system is correct.
Any help would be greatly appreciated.
Mark.
Can anyone shed some light on this as I'm unsure of which system is correct.
Any help would be greatly appreciated.
Mark.