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Two balloons were suspended from a string with a gap of 30 cm between them. A child blows air between the balloons to make them move. He notices that the balloons instead of moving apart moved close together. Why do the balloons move close together?
Most Upvoted Answer
Two balloons were suspended from a string with a gap of 30 cm between ...
Understanding the Balloon Behavior
When the child blows air between the two balloons, an interesting phenomenon occurs that demonstrates the principles of fluid dynamics and pressure differences.
Bernoulli's Principle
- When air is blown between the balloons, it moves faster in that narrow space.
- According to Bernoulli's Principle, an increase in the speed of a fluid (in this case, air) results in a decrease in pressure.
Pressure Differences
- The air blown between the balloons creates a region of lower pressure compared to the surrounding air.
- The higher pressure outside the balloons pushes them inward towards each other.
Attraction of Balloons
- As the air flows faster between the balloons, the lower pressure pulls them closer.
- The surrounding air exerts a force that causes the balloons to move towards the area of lower pressure.
Visualizing the Effect
- Imagine the balloons as two boats in a river. When water flows rapidly between them, the boats are pulled together rather than pushed apart.
- This is similar to how the airflow acts on the balloons.
Conclusion
- The movement of the balloons towards each other is a direct result of the interaction between the fast-moving air and the pressure differentials created.
- This phenomenon highlights the fascinating relationship between air pressure and movement, showcasing basic principles of physics in action.
When the child blows air between the two balloons, an interesting phenomenon occurs that demonstrates the principles of fluid dynamics and pressure differences.
Bernoulli's Principle
- When air is blown between the balloons, it moves faster in that narrow space.
- According to Bernoulli's Principle, an increase in the speed of a fluid (in this case, air) results in a decrease in pressure.
Pressure Differences
- The air blown between the balloons creates a region of lower pressure compared to the surrounding air.
- The higher pressure outside the balloons pushes them inward towards each other.
Attraction of Balloons
- As the air flows faster between the balloons, the lower pressure pulls them closer.
- The surrounding air exerts a force that causes the balloons to move towards the area of lower pressure.
Visualizing the Effect
- Imagine the balloons as two boats in a river. When water flows rapidly between them, the boats are pulled together rather than pushed apart.
- This is similar to how the airflow acts on the balloons.
Conclusion
- The movement of the balloons towards each other is a direct result of the interaction between the fast-moving air and the pressure differentials created.
- This phenomenon highlights the fascinating relationship between air pressure and movement, showcasing basic principles of physics in action.
Community Answer
Two balloons were suspended from a string with a gap of 30 cm between ...
The balloons move close together because of Bernoulli's principle.
When the child blows air between the balloons, it increases the speed of the air between them.
This causes the pressure between the balloons to decrease.
The air pressure outside the balloons is higher than the air pressure inside the balloons, so the balloons are pushed together.
Bernoulli's principle states that the pressure of a fluid (like air) decreases as its velocity increases.
So, when the child blows air between the balloons, the air speed increases and the pressure decreases.
This difference in pressure causes the balloons to move closer together.
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Two balloons were suspended from a string with a gap of 30 cm between them. A child blows air between the balloons to make them move. He notices that the balloons instead of moving apart moved close together. Why do the balloons move close together?
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Two balloons were suspended from a string with a gap of 30 cm between them. A child blows air between the balloons to make them move. He notices that the balloons instead of moving apart moved close together. Why do the balloons move close together? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Two balloons were suspended from a string with a gap of 30 cm between them. A child blows air between the balloons to make them move. He notices that the balloons instead of moving apart moved close together. Why do the balloons move close together? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two balloons were suspended from a string with a gap of 30 cm between them. A child blows air between the balloons to make them move. He notices that the balloons instead of moving apart moved close together. Why do the balloons move close together?.
Two balloons were suspended from a string with a gap of 30 cm between them. A child blows air between the balloons to make them move. He notices that the balloons instead of moving apart moved close together. Why do the balloons move close together? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Two balloons were suspended from a string with a gap of 30 cm between them. A child blows air between the balloons to make them move. He notices that the balloons instead of moving apart moved close together. Why do the balloons move close together? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two balloons were suspended from a string with a gap of 30 cm between them. A child blows air between the balloons to make them move. He notices that the balloons instead of moving apart moved close together. Why do the balloons move close together?.
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