# 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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• #### G3-02: SHIVE WAVE MACHINE - SUPERPOSITION OF PULSES

Demonstrate constructive and destructive interference using pulses. Read More
• #### G3-03: SHIVE WAVE MACHINE - REFLECTION OF PULSES

Demonstrate reflection of pulses from fixed ends and free ends. Read More

• #### G3-05: SHIVE WAVE MACHINE - PARTIAL REFLECTIONS

Show that a wave will be partially reflected at a point where the impedance changes. Read More
• #### G3-06: SHIVE WAVE MACHINE - IMPEDANCE MATCHING

Show that no reflection occurs when the impedance of the load (absorber at right) matches the impedance of the wave machine. Read More
• #### G3-07: SHIVE WAVE MACHINE - TAPERED TRANSFORMER

Useful for obtaining a reasonably good impedance match between the two large segments of the Shive machine. Read More
• #### G3-08: SHIVE WAVE MACHINE - FABREY-PEROT INTERFEROMETER

Demonstrate the mechanical analog of the optical Fabrey-Perot interferometer. Read More
• #### G3-09: SHIVE WAVE MACHINE - FREQUENCY FILTERING

Demonstrate the mechanical analog of the optical Fabrey-Perot interferometer. Read More
• #### G3-10: SHIVE WAVE MACHINE - BRANCHING

Demonstrate branching and recombining with two wave machines in parallel. Read More
• #### G3-11: SHIVE WAVE MACHINE - RESONANCE ABSORPTION

Demonstrate resonance absorption of wave energy by a mass-on-spring system. Read More
• #### G3-20: WAVE APPARATUS

Demonstrate transverse and longitudinal wave motion. Read More

• #### G3-23: TRANSVERSE WAVES ON A LONG SPRING - FREE END

Show reflections at a free end. Read More

• #### G3-25: SLINKY ON LECTURE TABLE - IMPEDANCE MISMATCH

Show partial reflections and dependence of wave speed on density of the medium. Read More
• #### G3-26: AIR TRACK - LONGITUDINAL WAVES

Demonstrate longitudinal waves with a series of spring-coupled air track gliders. Read More
• #### G3-27: AIR TABLE - TRANSVERSE AND LONGITUDINAL WAVES

Demonstrate transverse and longitudinal waves using an air table. Read More

Shows longitudinal and transverse traveling waves & standing waves Read More
• #### G3-29: SUSPENDED SLINKY - PORTABLE

Show longitudinal and transverse traveling waves and standing waves. Read More
• #### G3-31: Spring and Horns

Show sound waves from a mechanical wave Read More
• #### G3-41: WAVE MODELS - PROJECTION

Demonstrate standing waves, travelling waves, and superposition of waves. Read More
• #### G3-42: TORSIONAL WAVES

Demonstrate wave phenomena such as traveling waves, standing waves, and reflection of waves Read More
• #### G3-43 WHIP

Illustrates transverse wave motion. Read More
• #### G3-45: RESONANCE OF WIRES

Show standing waves in heavy wires fixed at one end. Read More
• #### G3-46: STANDING WAVES IN A WIRE LOOP

Illustrate circular standing waves; to use as a model of stationary states in atoms corresponding to standing waves of electrons Read More
• #### G3-51 ROPE WAVE GENERATOR - FREQUENCY VS. WAVELENGTH

Show standing waves in heavy wires fixed at one end. Read More
• #### G3-52: ROPE WAVE GENERATOR - ROPE TENSION VS WAVELENGTH

Observe the change in wavelength of a vibrating rope as the tension is varied. Read More
• #### G3-53 STANDING WAVES IN A STRING

Demonstrates standing waves on a thin string Read More
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