# Rotational Dynamics

## D3-33: Centripetal Acceleration - Rotating Ball and Brick

Purpose: To illustrate centripetal acceleration and the associated forces

## J5-30: OMEGA LEVITRON

Category: J5 Magnetostatics
Purpose: Show an interesting demonstration of magnetism.

## G3-20: WAVE APPARATUS

Purpose: Demonstrate transverse and longitudinal wave motion.

## G1-12: PENDULUM AND ROTATING BALL

Purpose: Demonstrate that simple harmonic motion is the projection of uniform circular motion.

## F4-22: SPINNING WATER BUCKET

Category: F4 Fluid in Motion
Purpose: Illustrate the reaction force on spinning water and the shape of the water surface.

## F4-21: LIQUID IN SPINNING SPHERE

Category: F4 Fluid in Motion
Purpose: Show the behavior of a liquid when subjected to a centripetal force.

## D5-24: ROTATING PENDULA - LENGTH VS. HEIGHT

Purpose: Show that pendula of different length suspended from the same point rotating at the same angular speed rise to the same vertical height.

## D5-23: ROTATING BEAD ON LOOP

Purpose: Demonstrate the presence of a "critical parameter" which determines the dynamic behavior of a simple physical system.

## D5-22: ROTATING PENDULUM

Purpose: Demonstrate the presence of a "critical parameter" which determines the dynamic behavior of a simple physical system.

## D5-21: BALL ROLLING ON ROTATING DISC

Purpose: Show that a sphere rolling on a rotating disc will move in circles.

## D5-12: CORIOLIS EFFECT - WATER JET

Purpose: Model the Coriolis effect.

## D5-11: CORIOLIS EFFECT - BALL ON ROTATING PLATFORM

Purpose: Illustrate the Coriolis effect.

## D5-08: WINEGLASS AND OLIVE

Purpose: Conundrum involving angular motion.

## D5-07: STABLE AND UNSTABLE PRINCIPAL AXES

Purpose: Show that rotation about the principal axis of smaller moment of inertia is unstable and changes to rotation about the principal axis of maximum moment of inertia.

## D4-27: EULER'S DISK

Category: D4 Gyroscopes
Purpose: Demonstrate kinematics and inertia.

## D5-06: FIDDLESTICK

Purpose: Illustrate weird rotational effects and to demonstrate transformation of gravitational potential energy into rotational energy.

## D5-04: SPINNING BOOK

Purpose: Illustrate the effect rotation about the various principal axes on stability.

## D5-02: FOOTBALL

Purpose: Example of a gyroscopic effect.

## D3-41: AIR TABLE - RECTANGULAR PUCK COLLISIONS

Purpose: Qualitatively show conservation of angular momentum in collisions of a circular puck with a rectangular puck.

## D3-32: KEYWHIP

Purpose: Demonstrate angular momentum conservation in a surprising way.
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• #### F4-01: VISCOSITY OF LIQUIDS

Compare the viscosities of water and mineral oil. Read More
• #### F4-02: VISCOSITY OF AIR

Demonstrate that air is viscous. Read More
• #### F4-04: SILLY PUTTY

Demonstrate a non-Newtonian fluid. Read More
• #### F4-05: PARACHUTE TOY

Demonstrate how a parachute quickly reaches its terminal velocity. Read More
• #### F4-11: LAMINAR AND TURBULENT FLOW OF AIR

Demonstrate laminar and turbulent flow. Read More
• #### F4-12: UNMIXING - GLYCERIN AND DYE

Illustrate laminar flow by "unmixing" two fluids Read More
• #### F4-13: FLUID FLOW MODEL

For use as a model in developing equations for fluid flow. Read More
• #### F4-14: WIND TUNNEL

Show air flow around different objects. Read More
• #### F4-21: LIQUID IN SPINNING SPHERE

Show the behavior of a liquid when subjected to a centripetal force. Read More
• #### F4-22: SPINNING WATER BUCKET

Illustrate the reaction force on spinning water and the shape of the water surface. Read More
• #### F4-23: WATER PENDULUM

Show the surface of a container of water in a swinging pendulum. Read More
• #### F4-25: CYCLONE IN A BOTTLE

Illustrate vorticity in a perhaps tricky way. Read More
• #### F4-31: SIPHON

Illustrate how a siphon works. Read More
• #### F4-32: SIPHON - CHAIN MODEL

Illustrate how a siphon works. Read More
• #### F4-33: PYTHAGOREAN CUP

Demonstrate the siphon in a surprising way. Read More
• #### F4-34: SIPHON BALANCE

Demonstrate properties of the siphon using a counterintuitive example. Read More
• #### F4-41: DRUM AND CANDLE

Demonstrate the circular vortex. Read More
• #### F4-42: SMOKE RINGS USING GARBAGE CAN

Create large smoke rings and illustrate the circular vortex. Read More
• #### F4-51: VACUUM PUMP MODEL

Illustrate how a mechanical vacuum pump works. Read More
• #### F4-52: FORCE PUMP - MODEL

Demonstrate the operation of a force pump. Read More
• #### F4-53: ARCHIMEDES' SCREW

Demonstrate a pump mechanism invented by Archimedes. Read More
• #### F4-61: HERO'S FOUNTAIN

Illustrate fluid dynamics in a perhaps surprising way. Read More
• #### F4-63: MARIOTTE'S BOTTLE

Show the range of water jets from different heights along a water column. Read More
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