To order demonstrations for your class, send mail to: Gerald_Zani@brown.edu
| Pendula | 3A10.10 Simple Pendulum A mass on a string. 3A10.30 Torsion Pendulum A bar with adjustable weights suspends off a wire. 3A10.40 Variable g Pendulum Change angle to change the component of gravity and the frequency. 3A10.50 Cycloid Pendulum A ball rocks and rolls back and forth along a cycloid curve. |
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| Physical Pendula | 3A15.10 Physical Pendulum A hanging stick oscillates. 3A15.15 Sweet Spot A baseball bat breaks a toothpick. 3A15.50 Center of Percussion A lead puck strikes a stick |
| Springs and Oscillators | 3A20.10 Mass on a spring A mass on a spring. 3A20.11 Mass on a spring with Sonic Ranger Change the mass and get a new frequency of oscillation 3A20.20 Series and parallel springs Masses deflect two springs in series and parallel. 3A20.30 Air track glider and spring An air track with a glider on a spring. |
| Simple Harmonic Motion | 3A40.00 Examples of SHM A mass on a string, a mass on a spring, physical pendulum. 3A40.05 Horizontal mass-spring system A carts oscillates with SHM. 3A40.10 Uniform Circular Motion and SHM A mass on a string is synched with a turntable. 3A40.32 SHM Vectors A spider mechanism on a wheel is cranked by hand. 3A40.33 Water U-tube Water in a U-tube undergoes an oscillation. |
| Damped Oscillators | 3A50.10 Dashpot damped oscillations A mass on a spring is damped in water. 3A50.11 Stick in Water A stick is damped in water. 3A50.60 Damped Tuning Fork Oscillations from a damped tuning fork are shown on a scope. |
| Driven Mechanical Resonance | 3A60.00 Hand held mass on a string Oscillate a mass on a string by hand. 3A60.10 Tacoma Narrows A video shows the famous bridge collapse into the river. 3A60.35 Bowling ball swing A bowling ball pendulum is pumped like a swing. 3A60.40 Hand Held mass and spring A mass on a spring is vibrated by hand. 3A60.47 Driven mass and spring A mass on a spring is vibrated at resonance. 3A60.99 Driven Water Balloon A water balloon is driven at resonance. |
| Coupled Oscillations | 3A70.10 Wilberforce Pendulum The compressional mode and the torsional mode are coupled. 3A70 .20 Coupled Pendula A pair of physical pendula linked by a spring show beats. |
| Normal Modes | 3A75.09 Two coupled oscillators Show the normal modes for a system of two masses and springs. 3A75.10 Six coupled oscillators Show the normal modes for a system of six masses and springs. |
| Lissajou Figures | 3A80.10 Sand
pendulum A pendulum traces lissajou figures in sand. 3A80.20 Lissajou Figures Show Lissajou figures from a fourier synthesiser on a scope. |
| Non-linear Systems | 3A95.10 Water relaxation oscillator A bucket on a pivot is filled with
water and dumps it out. 3A95 .33 Non-Linear Physical pendulum A stick swings with a large amplitude. 3A95.50 Chaotic pendulum A double pendulum shows chaotic motion. |
| Transverse Pulses and Waves | 3B10.10 Pulse
a spring A pulse travel down a long spring. 3B10 .20 Slinky A pulse travels along a slinky. 3B10 .30 Torsional Shive Wave Machine A pulse travels along a series of bars connected by springs. 3B10 .60 Ripple tank A water wave is shadow projected on a screen. |
| Longitudinal Pulses and Waves | 3B20.10 Slinky A compression pulse is sent along a slinky. 3B20.30 Longitudinal Wave A pulse travels along a sequence of verticle bars connected by springs. |
| Standing Waves | 3B22.10 Vibrating string A string is driven at the harmonics. 3B22.90 Cranked wave model Wire helixes travel oppositely and are superposed into a standing wave. |
| Impedance and Dispersion | 3B25.10 Impedance Matching Two different wavelengths are matched
together. 3B25.50 Transient Response A driven system exhibits a transient response. |
| Compound Waves | 3B27.00 Fourier synthesis A wave is constructed from its harmonics. |
| Properties of Sound | 3B30.33 Bell in a vacuum Try to listen to a bell in a vacuum. |
| Phase and Group Velocity | 3B33.20 Two transparencies Two independant sources of parallel lines are superposed on the OHD. |
| Doppler Effect | 3B40.10 Buzzer on a Rope Whirl a buzzer around with a rope. 3B40 .11 Doppler Speaker Hold a speaker in your hand and move it forward. |
| Interference and Diffraction | 3B50.10 Ripple
Tank Wave interference is shown by water waves. 3B50.30 Laser Disc of Ripple Tank The single slit and double slit ripple tank is shown. 3B50.40 Two Slit Interefernce Transparencys Two Transparencys of Huygens wavelets show interference. |
| Interference and Diffraction of Sound | 3B55.10 Interference of Sound A long bar on a pivot with seperated speakers is rotated. |
| Beats | 3B60.10 Tuning fork beats A pair of tuning forks create beats. 3B60 .20 Beats on a scope Two independant function generators are summed on a scope. |
| Sympathetic Vibrations of Coupled Resonators | 3B70.10 Sympathetic Vibrations of two tuning forks A pair of tuning forks show sympathetic vibrations. |
| Wave Analysis and Synthesis | 3C50.00 Fourier synthesis A wave is constructed from its harmonics. |
| Resonance in Strings | 3D20.10 Differential Sonometer A sounding box with one string, a bridge a tuning key. |
| Resonance Cavities | 3D30.10 Organ
Pipes Activate an organ pipe by blowing to hear the sound. 3D30.20 Closed and Opened Organ Pipes An open pipe has a higher frequency than a closed pipe. 3D30.22 Short and Long Organ Pipes An open pipe has a higher frequency than a closed pipe. 3D30.24 Organ Pipe with Node An pipe has a node forced in the middle. 3D30.35 Bloogles A plastic tube resonates when twirled around. 3D30.40 Helmholtz Resonator A a spherical resonator with a tuning fork. 3D30.60 Kundt's tube A tube resonates using a speaker and a plunger. 3D30.70 Hoot tubes A glass tube resonates using a bunsen burner. |
| Air Column Instruments | 3D32.10 Organ Pipes Activate an organ pipe by blowing to hear the sound. |
| Resonance in Bars and Plates | 3D40.20 Singing
Rods Hold a rod at a node and stroke it to hear the sound. 3D40.30 Chladni Plates Sprinkle sand onto a plate and vibrate it at different frequencies. 3D40.55 Beaker Breaker Use sound waves to shatter a glass beaker. |
| Tuning Forks | 3D46.10 Tuning
forks A set of tuning forks. 3D46.90 Driven tuning forks Drive a tuning fork. |
This web page was last updated on 1/19/00. Please e-mail your comments or suggestions to Gerald_Zani@brown.edu