Why Does It Float?

Consider the following simple experiment. Get a can of Diet Coke and a can of Classic Coke. Diet 7Up and & 7Up will work as well. Fill a large pot or basin with water. Place both cans in the water. Something interesting happens. Diet Coke floats while Classic Coke sinks. There is a simple explanation for why this happens. Why does Diet Coke float?

(Image courtesy of University of Wisconsin, 2008)


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  1. #1 by SaqibSaab on July 17, 2008 - 3:22 am

    So what’s the answer?! 🙂

  2. #2 by brotherhood on August 24, 2008 - 3:18 pm

    because there is enough sugar to make the coke more dense than the diet version.diet coke is less dense than water!

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