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Which is heavier, an inflated or deflated balloon?

April 26, 2017balloon deflated heavier inflated Mathematics Physics

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Which is heavier, an inflated or deflated balloon?

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The inflated one. The deflated one has only the weight of the balloon skin, but the inflated one has the weight of the balloon skin AND the air inside. This makes it heavier because air has a weight, even if it is very small it has a weight. If you filled it with helium you might then think it was lighter but still a balloon filled with helium is still heavier than the deflated one because helium is less dense than air (hence it rises) but still has a weight.