Coupled Oscillations and Resonance

Coupled Oscillators

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Long pendulums coupled by spring; also a pair of hacksaw blades magnetically coupled.

[In-Depth Description]

Double Spring Oscillation simulation

OHP Coupled Oscillators

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Magnetically coupled oscillators which can be driven to show two normal modes of vibration; one oscillator can also be tuned.

Three Coupled Oscillators

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Three hacksaw blade oscillators electromagnetically driven to demonstrate three normal modes of vibration.

Air Track Coupled Oscillators

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Two or more gliders, coupled by springs, driven to show normal modes of vibration.

Synchronization of Metronomes

[M | t+ | ★★★★]

[In-Depth Description]

Non-linear Oscillations

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Air track glider/oscillator with a spring arrangement so that restoring force is proportional to (displacement) 2.

Chaotic Pendulum

[M | t | ★★★]
Coupled, double, physical pendulum executes chaotic motion when non-linear initial conditions are imposed.

[In-Depth Description]

'Y' Suspended Pendulum

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Pendulum with two distinct periods...superposition of normal modes of oscillation.

Sand Pendulum

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Pendulum leaks sand onto black paper leaving a record of rotating ellipsoidal motion.


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Physical pendulum with analog x and y displacement readout on storage oscilloscope.

Shattering Wineglass

[L | t+ | ★★★★]
Large speaker with signal generator/amplifier destroys a wineglass; stroboscopic illumination shows vibration mode.

[In-Depth Description]

Barton's Pendulum

[L | t | ★★★★]
Ten coupled pendulums of different lengths; shows resonance and phase.

[In-Depth Description]

Chladni Plates

[S | t+ | ★★★★]
Accumulation of sand at nodes of vibrating plate reveals resonance patterns.

[In-Depth Description]

Big Chladni Plate

[L | t++ | ★★★ ]
Electromagnetically driven plate to show two dimensional modes of vibration.

[In-Depth Description]

Vibrations on a Drumhead

[— | — | —]
A driven membrane to show modes of vibration.

[In-Depth Description]

Frahm Resonance Gyroscope

[S | t | ★★]
Vibrational resonances of metal reeds are excited by a spinning gyro as it slows down

[In-Depth Description]

Parametric Excitation

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A pendulum is set into motion by periodically pulling on the string at the proper frequency

Inverted Pendulum

[S | t+ | ★★★]
A physical pendulum finds stability in its inverted position when driven at the proper frequency and amplitude combination.

[In-Depth Description]

Rotating Saddle

[L | t | ★★★★]
Mechanical analog of a Paul Trap particle confinement - a ball is trapped in a time-varying quadrupole gravitational potential.

[In-Depth Description]

Dust Particle Paul Trap

[S | t+ | —]
An electrically charged dust particle is trapped in a time-varying (60 Hz) quadrupole electric field.

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