Why does this happen?
Take 2 balloons of approximately equal size.put a little water into the ballons.Blow up both the balloons and tie each one to a string.Hang them 8-10 cm apart on a stick.blow in the space between the ballons,THey moved towards each other.
Ouestion:Why did the balloons moved towards each other on being blown?

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Solution

Here the velocity of air between the two balloons is hight with respect to surrounding.according to Bernoulli's theorem when velocity increases pressure decreases.this is the reason why balloons come close to each other

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