Eli5; Asked by my 7 year old; Could you Swim in Marbles?

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Inspired by Scroge McDuck, of course. We were discussing how you could not swim in gold coins because they stack together and form into a more solid entity, and are not fluid like water. And then we were talking about ball pits and she asked if she had gold marbles in a swimming pool could she swim in those?

I answered no originally but then realized, I don’t know for sure.

In: Physics

5 Answers

Anonymous 0 Comments

The reason why you can move through a ball pit with relative ease is because the balls are hollow and generally extremely light and not dense. Gold is one of the most dense metals we have readily available. If you made them hallow enough to be able to easily move through them they’d likely crush when you touch them because it would be so thin and gold is a very soft metal.

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