- #1
jaumzaum
- 434
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I was solving a question from an entrance exam that said the following:
Consider 2 balloons very close to each other. A person blows air in the place at the middle of the 2 balloons. What happens with them?
The answer is that they approach each other, but why? For me, the blow will increase the pressure in the middle of the balloons, that will be greater than the one in the other side, creating a net force that will distance the balloons. What is wrong with this thinking? I tried to use Bernoulli on this one but as I was told, Bernoulli only can be used in the same current line, and I got no response.
Thank you very much!
Joao
Consider 2 balloons very close to each other. A person blows air in the place at the middle of the 2 balloons. What happens with them?
The answer is that they approach each other, but why? For me, the blow will increase the pressure in the middle of the balloons, that will be greater than the one in the other side, creating a net force that will distance the balloons. What is wrong with this thinking? I tried to use Bernoulli on this one but as I was told, Bernoulli only can be used in the same current line, and I got no response.
Thank you very much!
Joao