I ate out yesterday under a fan and noticed that the wax paper and foil that we got with our food kept blowing away if we didn’t put something on it. Regarding this, I had two questions pop into my mind.
1) Why does the paper/foil blow away sideways even though the fan is directly above us?
2) Why is it that if we crumple the paper/foil it doesn’t move anymore? The weight obviously doesn’t change, so why does it suddenly gain the power to resist the air blown by the fan?
Thanks!
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1, larger surface area and low weight means it gets caught in the wind and blows away easier. 2, A crumpled ball will still roll away but it can’t fly cause it doesn’t have enough surface area to actually get caught in the wind. It’s the same weight yes. But more densely packed into a sphere than a flat piece of paper
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