Code Number: 2B40.41a

Demo Title: Buoyancy Paradox

Condition: Excellent

Principle: Buoyancy, Volume, & Density

Area of Study: Fluids

Equipment:

Water Filled Tank and Paradox Apparatus.

Procedure:

Hang the paradox apparatus on a horizontal bar with a hook on it. Place the apparatus in balance by adjusting the distance of each ball from the center. Since one ball is 1/2 the density of the other the distance from the center of the arm should be a 1:2 ratio. Each ball has the same volume, however. when dipped into the water the equilibrium is disrupted.

References:

Paul Hewitt, "Figuring Physics", TPT, Vol. 27, #6, Sept. 1989, p. 496.

University of Maryland Physics Department QOTW Question #40

University of Maryland Physics Department QOTW Answer #40

2B40.41 - Buoyancy Paradox

Disclaimer

These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist. The University of Iowa is not responsible for demonstrations performed by those using their own 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), including 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.

Instructional Resources and Lecture Demonstrations

2B40.41a - Buoyancy Paradox

Disclaimer