Breadcrumb
2B40.15 - Buoyancy - Finger, Water, and Scale
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Code Number: 2B40.15
Demo Title: Buoyancy - Finger, Water, and Scale
Condition: Excellent
Principle: Buoyancy
Area of Study: Fluids
Equipment:
Digital Scale, Beaker, and Water.
Procedure:
Place the beaker of water on the scale and tare the scale. As you press your finger into the water the scale reading will increase. Basically this reading is a direct measurement of the buoyant force that the water is exerting on the finger.
References:
- Michael M. Hull, Shizuka Nakayama, Sachiko Tosa, "Poking Your Finger into a Cup of Water on a Scale: Simple Adhesion Force Experiment", TPT, Vol. 61, #2, Feb. 2023, p. 128.
- Amanda C. Tenhoff, Adam J. Gerenz, and Jeffrey A. Jalkio, "Buoys and Springs – Building Connections Between Math and Physics", TPT, Vol.54, #9, Dec. 2016, p. 556.
- Alpha E. Wilson, "Buoyant Beaker Balls: Another View", TPT, Vol. 54, #8, Nov. 2016, p. 452.
- Paul Hewitt, "Hewitt's Response", TPT, Vol. 54, #3, Mar. 2016, p. 132.
- Carl Mungan, "Buoyant Beaker Balls", TPT, Vol. 54, #3, Mar. 2016, p. 132.
- Paul Hewitt, "Answer to January 2016 Figuring Physics Question", TPT, Vol. 54, #2, Feb. 2016, p. 124.
- Pirooz Mohazzabi and Mark C. James, "A Simple Apparatus for Demonstrating Fluid Forces and Newton's Third Law", TPT, Vol. 50, #9, Dec. 2012, p. 537.
- James J. Carr, "Demonstrating Newton's Third Law", TPT, Vol. 42, #3, Mar. 2004, p. 132.
- Paul Hewitt, "Figuring Physics: Submerged Teabag", TPT, Vol. 41, #7, Oct. 2003, p. 384.
- Paul Hewitt, "Figuring Physics: Beaker and Water", TPT, Vol. 39, #4, Apr. 2001, p. 204.
- Eric Kincanon, "Explanation of a Buoyancy Demonstration", TPT, Vol. 33, #1, Jan. 1995, p. 31.
- Robert Ehrlich, "6.3, Buoyant Force on your Finger", Why Toast Lands Jelly-Side Down, p. 102.
- R. W. Pohl, "7. The Upward Thrust of Liquids on Solid Bodies Immersed in Them", Physical Principles of Mechanics and Acoustics, p. 163.
- Martin Gardner, "Finger in the Bowl", Entertaining Science Experiments with Everyday Objects, p. 83.
- Borislaw Bilash II and David Maiullo, "Fingering Out Buoyancy", A Demo a Day: A Year of Physics Demonstrations, p. 188.
- Janice VanCleave, "4, Weigh Your Hand", Teaching the Fun of Physics, p. 13.