2B40.85 - Different Sized Density Balls


Density with Bean Bowl Demo
Density with Bean Bowl Demo



Code: 2B40.85


Demo Title: Different Sized Density Balls


Subject: Density and Buoyancy


Description:
Bury a 40 mm Ping Pong ball in a bowl of Pinto beans and then place a 40 mm steel ball on top. Shake the bowl and the Ping Pong ball will rise to the top while the steel ball will sink to the bottom.


Procedure:

  • Begin by explaining how higher density materials form/settle in the center of the planet.
  • Bury the Ping-Pong ball beneath the beans prior to starting the demo
  • Place heavier density ball in the bowl with beans and shake, the ball will settle.
  • The ping pong ball will rise to the surface.
  • Take the ping pong ball with the bean inside into the beans and shake, it should stay on top.
  • Bury the same ping pong ball and shake, it will rise to the surface.

  • Video URL:


    Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with Rutgers University and only under the direction of a trained instructor or physicist. Rutgers University is not responsible for any demonstrations performed by those using their own or others equipment, or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here, entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition, and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.


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