Experiment - beer bottle and ping pong ball

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    Ball Beer Experiment
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SUMMARY

The experiment involving a beer bottle, water, and a ping pong ball demonstrates the principles of atmospheric pressure, hydraulic force, and buoyancy. When the beer bottle is completely filled with water, the atmospheric pressure acting on the ping pong ball counteracts the gravitational force, preventing the ball from falling when the bottle is inverted. However, when the bottle is not full, the gravitational force exceeds the combined effects of atmospheric pressure and hydraulic force, causing the ball to fall. This highlights the critical role of buoyancy in fluid dynamics.

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  • Understanding of atmospheric pressure
  • Basic principles of buoyancy
  • Knowledge of hydraulic force
  • Familiarity with gravitational force
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Oomph!
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Hello.
I have a question about experiment. You know it. You need beer bottle, water and ping pong ball.
You completely fill the beer bottle with water and you take the ball on the top of the bottle. The ball will not fall, if you take the beer bottle upside down.
OK, the atmospheric force have same value but opposite direction than hydraulic force, it is right? So, the ball will not fall. However, what about buoyancy force? It depents on it?
And the most important question - why does the ball fall if the beer bottle is not full of watter? The hydraulic force is not attract, only gravitational force and atmospheric force attract. The gravitational force is bigger? It is right? Or why?

Thank you very much!
Oomph!
 
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