I mean your average party balloon, when it’s completely deflated, it seems you have to put extra effort into getting it going. As soon as it starts inflating, you need less effort.
In: Physics
Some interesting answers. I’m sure the tension of the materials against the air has SOME effect. But largely, in my opinion, you’re overcoming the atmospheric pressure / gravity. Once you’ve inflated the balloon slightly, you’ve pressurized the system into something closer to atmospheric pressure. and the atmosphere will have a delicate balancing act with your balloon to try to meet equilibrium of pressure.
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