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

Rather unlikely. Gold is pretty dense (19.33 g/cc ie 19 times that of water). So 1000 cc (1 liter) of gold would weigh 19 kg. A cup of gold would weigh approx 11 pounds. If you were submerged in gold marbles by even 1 feet, you’d probably have something like a ton of weight on your body.

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