======Floating Ping Pong Ball======


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**Materials: **{{$demo.materials_description}}\\
**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
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**Categories:** {{$demo.categories}}
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**Alternative titles:** Bernoulli’s Principle with a Ping Pong Ball
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====Summary====                   
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====Procedure====  
  - Plug in a hair dryer and set it to blow air straight upward.  
  - Hold a ping pong ball above the stream of air and let go.  
  - Watch as the ball hovers and stays balanced in the air flow.  
  - Experiment by gently moving the hair dryer sideways or tilting it to see how the ball remains suspended.



====Links==== 
How to float a ping pong ball on air - The Coandă Effect - Physics Girl
: 
{{youtube>kR2Oi3XCX18?}}\\

Suspended Ping Pong Ball in Stream of Air - Science Made Easy: 
{{youtube>jT_sQydkBZg?}}\\

📄 Floating ping pong ball - Experiment Archive: [[https://www.experimentarchive.com/experiments/floating-ping-pong-ball/]]\\

====Variations====
  * Use a beach ball with a leaf blower for a science show.
  * Place a toilet paper roll on a stick above the air stream to create a paper fountain.  
  * Position an empty toilet roll over the floating ping pong ball and observe how it is drawn upward.  
  * Try with a bent straw and a spun cotton ball to create a miniature version.  
  * Test how many balls you can float at once.



====Safety Precautions====
  * Use caution with the hair dryer - it may become hot after prolonged use.  
  * Keep hair and loose clothing away from the air intake.  
  * Do not allow small children to handle the hair dryer without supervision.  
  * Avoid using near water or in damp environments.




====Questions to Consider====
  * How does Bernoulli’s principle explain why the ball stays in the air stream? (Air moving faster has lower pressure, so higher-pressure surrounding air pushes the ball back into the stream.)  
  * How much can you tilt the hair dryer before the ball falls out?  
  * What happens if you try to float two ping pong balls at once?  
  * Why does adding weight inside a balloon help it float more steadily? (It prevents the balloon from being too light and unstable in the air stream.)