Buoyancy: Styrofoam Block

A large styrofoam block, which is practically weightless and therefore floats almost entirely on top of a surface of water, is submerged by forcing it down into a tank of water. It is observed that the force required to immerse the block is equal to the buoyant force acting on the block. This force, which is shown to increase with depth, is demonstrated by being felt by the demonstrator, and also by placing known weights on top of the block. In the latter case, the force is measured and compared to that estimated using Archimedes' principle.
Equipment
- Large water tank
- Large Styrofoam block
- Various weights
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This video is part of the project "Videos of Physics Demonstrations", which is created by Dr. Galli and Dr. Amiri of Physics Department, Weber State University. To access the full library of the videos, please visit this link: www.weber.edu/...
Links to University and Department:
Weber State University Homepage: www.weber.edu/
WSU Physics Department: www.weber.edu/...