Shifting temporary equilibrium : burning candles at both end

the candle is perfectly balanced in the center and each end is lit at different times, the the wax melts on each end of the candle, and when it drips off of one end, that end becomes less in weight than the other, causing an imbalance of weight and making it tilt, when this happens, the same thing happens on the other end of the candle, creating a seesaw effect.

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