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Fluid mechanics > Dynamics of fluids > Forces in Moving Fluids
Code
Demo Name
Description
2C20.07
Bernoulli Tubes
Air is blown over apparatus made of a straw through a flat surface and then a straw through a curved surface. Water does not rise in the straw through the flat surface.
2C20.27
Venturi Tubes
A series of manometers measures pressure of flowing air at points along a restricted tube.
2C20.30
Floating Balls
Place balls as so
Floating Balls
A demonstration showing that the static pressure in a free air stream is the ambient pressure. A beach ball, plastic egg, and screwdriver suspended in a upward jet of air.
2C20.31
Sinking and Floating Objects
Three objects are placed in a tank of water: a regular bowling ball, a hollow bowling ball, and a pumice stone.
2C20.35
Ball in Funnel
Set up photo. make sure demo is facing the class with tubing going toward the back of the table.
Ball in Funnel
A ball will stick in the apex of a funnel hooked to an air supply.
2C20.45
Blowing Air Between Bulbs
A counterintuitive example explained by pressure. Two lightbulbs are suspended and juxtaposed with a minor gap in between the two. As you blow air between the bulbs they come together instead of being pushed apart.
2C20.65
Curved Balls
Use a sandpaper covered V shaped launcher to throw curve balls.
2C20.72
Bernoulli Cups
A stretched rubber band wrapped around two Styrofoam cups attached bottom to bottom will spin through a loop the loop motion. A string wrapped mailing tube will also display this motion when the string is quickly jerked.
Disclaimer:
These demonstrations are provided only for illustrative use by persons affiliated with Rutgers University and only under the direction of a trained instructor or physicist. Rutgers University is not responsible for any demonstrations performed by those using their own or others equipment, or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here, entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition, and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.