#  Fluid Statics 

 



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### Archimedes' Principle

\[M | t | ★★★\]  
Spring scale indicates weight of mass in and out of water to demonstrate buoyant forces.  
  
\[[In-Depth Description](/presentations/archimedes-principle)\]

### Coke Can Buoyancy

\[S | t | ★★★\]  
An unopened can of regular Coca-Cola sinks in water while a can of Diet Coke floats.  
  
\[[In-Depth Description](/presentations/coke-can-buoyancy)\]

### Buoyant Force on Finger

\[S | t | ★★★\]  
A finger dipped into a glass of water experiences a buoyant force—made evident by observing the reaction force when the glass is on a pan balance.  
  
\[[In-Depth Description](/presentations/buoyant-force-finger)\]

### Cannon Ball Boat Puzzler

\[M | t | ★★★★\]  
Does the level of the ocean rise or fall when a cannon ball is thrown overboard from a boat?  
  
\[[In-Depth Description](/presentations/cannon-ball-boat-puzzler)\]

### Buoyant Force Measurement

\[M | t | ★★★\]  
Plastic Coke bottles filled with water, air, and sand are submerged in water, and a spring scale is used to determine the buoyant force.  
  
\[[In-Depth Description](/presentations/buoyant-force-measurement)\]

### Elevator Buoyancy

\[M | t++ | —\]  
Do ice cubes, floating in a glass of water, float differently in an upward or downward accelerating elevator?

\[[In-Depth Description](/presentations/elevator-buoyancy)\]

### Bean Buoyancy

\[S | t | ★★★\]  
Watch steel and table tennis balls sink and float in this "dried bean fluid".  
  
\[[In-Depth Description](/presentations/bean-buoyancy)\]

### Buoyant Soap Bubbles

\[S | t+ | —\]  
Soap Bubbles float in an aquarium filled with SF6.

### Two-Fluid Buoyancy

\[S | t+ | —\]  
A polyethelene cylinder floats in water and sinks in vegetable oil. What happens when oil is poured on top of the floating cylinder?

### Stability in Flotation

\[M |t+ | ★★★\]  
Show why objects float in a preferred orientation and why one hull shape is more stable than another.

\[[In-Depth Description](/presentations/stability-flotation)\]

### Hydrometer

\[S | t+ | —\]  
Relative density measurement of liquids in beakers.

### Air Spring

\[S/M | t | —\]  
A piston in a cylinder is hit with a mallet and behaves as if the cylinder were full of springs.

### Water Bomb

\[M | t+ | —\]  
Plastic soda bottle full of water; when bottle is placed in LN2, water freezes and expands, with explosive results.

### Pascal Vases

\[S | t+ | ★★\]  
Pressure at the bottom of a vessel is proportional to the depth of the liquid and independent of the volume and shape of vessel.  
  
\[[In-Depth Description](/presentations/pascal-vases)\]