Which is heavier,the inflated or the deflated balloon?why?
The inflatable ballon is heavier, because its weight has the skin of the balloon and the air inside it. Although the air quantity is very small, it still has a weight. The pressure from the ballon stretch raises the density of air inside the envelope and thus increases the weight.
- Anything floats in a fluid when the moving force is stronger or similar to the force it pulls back. Since the balloon moves the air around it, these air molecules exercise a power to stabilize the balloon as a boost. So if you're using light gas like helium, this balloon is going to float. It would not have risen because of its greater weight, if you had filled the ballon with heavier gas.
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