Question

A man tries to blow between two balloons, pink and blue, tied to a string at a certain height as shown in the image below. In which direction, do you think the balloons will swing? A B С​

Answer 1

Answer:

B direction the ballons can flow

Answer 2

Answer:

Both the pink and blue balloons will move towards each other

at the point B.

Explanation:

• As the boy blows air between the balloons, the air pressure between them decreases.

• Hence, a pressure difference is created which pushes the two balloons towards each other as the air moves from a region of high pressure to a region of low pressure.

• The above answer is based upon Venturi effect.

Venturi effect:

• According to the Venturi effect, while mechanical energy is constant, a fluid travelling through a restricted space will move more quickly and its static pressure will drop.
• The result makes use of the conservation of mechanical energy as well as the continuity principle.
• This effect is an example of Bernoulli's Principle.

   

   Know more about Bernoulli's Principle:

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