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The Bowls that won't come Apart 2

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What kind of experiment is this?

Experimental procedure and explanation:

  • Position the two bowls vertically under water. The water pressure is large where the water is deep, and the bowls will not come apart.
  • But as you gradually move the bowls closer to the surface, they come apart at a certain depth.
  • The magnitude of buoyancy depends on the volume of air inside the bowls, and it does not depend on depth. However, water pressure decreases as its depth decreases; therefore, the bowls will come apart when they are close to the surface.
[Keywords] Water depth and pressure, Buoyancy
[Related items] The Bowls that won't come Apart 1
[Reference] “The Wonders of Flow,” Japan Society of Mechanical Engineering, Kodansha Blue Backs pp. 38-41, pp. 42-47.
“Illustrated Fluid Dynamics Trivia,” by Ryozo Ishiwata, Natsume Publishing, pp. 18-19.
Last Update:1.27.2014