Archimedes' Principle
[M | t | ★★★]
Spring scale indicates weight of mass in and out of water to demonstrate buoyant forces.
[In-Depth Description]
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]
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]
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]
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]
Elevator Buoyancy
[M | t++ | —]
Do ice cubes, floating in a glass of water, float differently in an upward or downward accelerating elevator?
Bean Buoyancy
[S | t | ★★★]
Watch steel and table tennis balls sink and float in this "dried bean fluid".
[In-Depth Description]
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.
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]