- Sections
- A. General Materials & Mathematics
- B. Statics
- C. Kinematics & Dynamics
- D. Rotational Mechanics
- E. Gravitation & Astronomy
- F. Fluid Mechanics
- G. Vibrations & Mechanical Waves
- H. Sound
- I. Thermodynamics
- J. Electrostatics & Magnetostatics
- K. Electromagnetic Principles
- L. Geometrical Optics
- M. Wave Optics
- N. Spectra & Color
- O. Vision
- P. Modern Physics
Buoyancy - Sphere And Water
Purpose
To challenge the students' thinking about the buoyant force by considering the question: "Will a round object, without a flat top & bottom surface, experience a buoyant force, as does a cylinder?"
Equipment
Archimedes' Law Demonstrator with small steel ball.
Images
Description
A round steel ball and a hollow metal can hang from the scale. The pressure is always normal to the surface of a body and increases linearly as the depth increases. When the steel ball is immersed it too experiences a buoyant force, because the upward vertical component of pressure applied to the lower hemisphere is greater in magnitude than the downward vertical component of the pressure exerted on the upper hemisphere.
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See pagesf1. pressure in static fluids
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See pagesf2. buoyancy
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See pagesf3. surface tension
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See pagesf4. fluid in motion
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See pagesf5. pressure in moving fluids
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See pagesf1. pressure in static fluids
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See pagesf2. buoyancy
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See pagesf3. surface tension
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See pagesf4. fluid in motion
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See pagesf5. pressure in moving fluids