Buoyancy  vs Surface Area

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 Code Number :   2B40.29?  

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources.

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Condition :   Good
Principle :   Buoyancy
Area of Study :  Heat & Fluids
Equipment :   1 ft square Plexiglas water tank, Styrofoam boat with aluminum blocks.

Procedure :   Carefully place the Styrofoam boat in the water with the aluminum blocks toward the top.  When balanced correctly the boat should float with the top edge of the Styrofoam at water level.  Flip the boat over and see that the Styrofoam block is now out of the water about 1/2 inch.  This is due to the additional surface area added by the aluminum blocks.
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   References

"Figuring Physics", TPT, Vol. 44, # 2, Feb. 2006, p. 117.

M.J. Clouter, "Archimedes' Principle:  A Classroom Demonstration with a Twist", TPT, Vol. 44, # 1, Jan. 2006, p. 46.

"Figuring Physics," TPT, Vol. 41, # 8, Nov. 2003, p. 494.

"Figuring Physics", TPT, Vol. 27, # 4, Apr. 1989, p. 312.

"Figuring Physics", TPT, Vol. 25, # 4, Apr. 1987, p. 244.

 

"88, The Passenger Rock,"  Christopher P. Jargodzki and Franklin Potter,  Mad About Physics, p. 30, 88.

26, "Floating Boat", Janice Van Cleave's, Physics for Every Kid, p. 62. 

 



Mail Questions and Comments to:  Dale Stille