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Sign Convention for Energy Methods in Vibration Analysis

First of all, when you say Energy Methods, it is not clear what you mean. It would be better to see your derivation so that we can point out the mistake. Moreover, I wouldn't say the equivalent spring ...
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Sign Convention for Energy Methods in Vibration Analysis

When the bar is rotating it does work on the springs, so the potential energy stored in the springs is negative relative to the potential energy of the bar. Equating the potential energy of the ...
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