Question

What happens when we blow into the space between two stationary balloons suspended at the same height by a thread?

• A. They come toward each other.
• B. They move away from each other.
• C. They swing in opposite directions.
• D. Nothing will happen.

Answer 1

The correct option is A They come toward each other.

When we blow into the space between two suspended balloons, the air between the balloons will have a higher velocity compared to the surrounding air. This creates a region of low pressure in the region between the balloons, as per Bernoulli's theorem. The pressure of the air outside the balloons is still constant. The pressure difference results in a force acting on the balloons, making them come closer to each other.