2 Fluid Mechanics

Archimedes Principle

Catalog: 
2B40.20A
Location: 
Af2
Not complete as yet

Flying Disk (frisbee)

Catalog: 
2C20.95
Location: 
Af5
Aerobie flying disk

Soap Bubble Recipes

Catalog: 
2A15.01
Location: 
These are the top 12 solutions compiled by Dale Stille, University of Iowa: 1. My Stock Solution: - 70 ml Joy - 20 ml Glycerine - 230 ml H20 - 115 ml Miracle Bubble 2. Charles Windsor Solution: - 70 ml Joy or Ivory - 230 ml Distilled H20 - 20 ml Glycerine 3. Recipe Three - 1 part Glycerine - 2 parts Soap - 3 parts Water - 3 parts Wonder Bubble 4. Recipe Four - Use 8 oz of Wonder Bubble - Add 1-2 oz of Joy - Add 1-2 oz of Glycerine 5. Recipe Five - Equal parts - Joy, Glycerine, & Water 6. Recipe Six - 1 part Glycerine - 2 parts Soap - 3 parts Water

Floating Metals

Catalog: 
2A10.20
Location: 
9-1
Paper clips and razor blades float on the surface of water due to the surface tension. Add a very small amount of dish detergent to the water and the surface tension is greatly reduced and the objects sink.

Floating & Density

The white beads float to the top and the blue sink to the bottom
Catalog: 
2B40.71
Location: 
Af3
When a 1L bottle is shaken, the blue and white beads mix within the liquid. When allowed to settle, the the beads separate, white at the top and blue at the bottom. However, shortly the two separated colored beads slowly come together until they meet in the center of the liquid, white on top of blue.

The Depletion Force

demonstration image
Catalog: 
2C25.000
Location: 
1-6
When large objects are ajitated in a mixture of small objects the large objects tend to be attracted together. The large objects create a void that prevents the small objects from striking other objects because the small objects path is blocked by by the large object. As two large objects approach each other they are attracted since the small objects are blocked from knocking the objects away.

Viscous drag - Video

demonstration image
Catalog: 
2C30.50
Location: 
3_1
Video Encyclopedia :Steel, glass, and lead balls are dropped in a tall cylinder filled with glycerin.

Buoyancy of Soft Drinks

The density of the two cans of coke are different.
Catalog: 
2B40.57
Location: 
Af3
Coke and Diet Coke are put to the density test. The diet coke floats and the coke sinks. Note: The coke and diet coke cans must be inserted sideways into the water to prevent bubble traps in the bottom of the cans.

Density Rod

Catalog: 
2B40.59C
Location: 
Af3
A metal rod barely floats in cold water and sinks in hot water.

Helium balloon in glass jar - Video

demonstration image
Catalog: 
2B40.43
Location: 
3_1
Video Encyclopedia :A helium balloon floats in an inverted container but sinks when the container is filled with helium.

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