Scientific Reasoning
G1-81: OUIJA WINDMILL
Category: G1 Simple Harmonic Motion
Purpose:
Illustrate a combination of simultaneous orthogonal oscillations.
B4-04: SPRING AND STRING THING
Category: B4 Elasticity
Purpose:
Illustrate series and parallel springs in a counterintuitive way.
C5-41: HOURGLASS PROBLEM
Category: C5 Third Law of Motion
Purpose:
Demonstrate the solution to the famous "hourglass problem," or Galileo's water bucket
B3-15: FOOL'S TACKLE
Category: B3 Simple Machines
Purpose:
Illustrate analysis of forces in a pulley system
B2-41: ROBERVAL BALANCE
Category: B2 Equilibrium of Forces and Torques
Purpose:
Demonstrate a paradox in equilibrium of forces and torques
B1-12: CENTER OF MASS - HINGED STICK PARADOX
Category: B1 Center of Mass Statics
Purpose:
Illustrate the center of mass in a surprising way
G2-07: PSYCHOACOUSTIC VIBRATION TRANSDUCER
Category: G2 Resonance and Coupled Oscillations
Purpose:
Challenge your students to recognize pseudoscience while illustrating resonance
C5-02 SPRING AND PULLEY PARADOX
Category: C5 Third Law of Motion
Purpose:
Show that the action-reaction pairs have equal magnitude
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G2-01 MASS ON SPRING - HAND HELD
Demonstrates resonance and phase shift at resonance
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G2-02: FORCED HARMONIC MOTION WITH DAMPING - LARGE
Demonstrate and graph driven and damped harmonic motion. Read More
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G2-03: RESONANCE IN TORSIONAL PENDULUM - PROJECTION
Demonstrate quantitatively all aspects of the driven and damped oscillator. Read More
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G2-04: DAMPED OSCILLATIONS
Demonstrate damped harmonic oscillations. Read More
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G2-05: AIR TRACK - DRIVEN AND DAMPED OSCILLATIONS
Illustrate the behavior of a driven and damped oscillator. Read More
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G2-06: FRAHM'S FREQUENCY METER
Check the 60 Hz line voltage frequency. Read More
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G2-07: PSYCHOACOUSTIC VIBRATION TRANSDUCER
Trick your students while illustrating resonance
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G2-08: DRIVEN NONLINEAR OSCILLATOR
Demonstrate amplitude "jumps" and resonance hysteresis in Duffing's equation. Read More
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G2-09: FORCED HARMONIC MOTION WITH SONAR
Plot a graph of forced damped harmonic motion near the resonant frequency. Read More
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G2-11: RESONANT SAW BLADES - HAND DRIVEN
Show that a mechanical oscillator responds with a maximum amplitude to its own resonant frequency. Read More
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G2-12: BARTON'S PENDULUMS
Demonstrate driven resonance. Read More
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G2-21 COUPLED PENDULA
Demonstrates coupling of motion between two pendula of the same length
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G2-22: BAR-COUPLED PENDULA
Demonstrate a coupling resonance and to show normal modes. Read More
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G2-23: SPRING-COUPLED PHYSICAL PENDULA
Demonstrate resonance and normal modes. Read More
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G2-24: COUPLED PENDULA - 100 TO 1 MASS RATIO
Illustrate mechanical resonance. Read More
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G2-25: COUPLED PENDULA - 1000:100:10:1 MASS RATIO.
Illustrate a complex resonance system. Read More
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G2-26: COUPLED AIR TRACK GLIDERS
Demonstrate coupled oscillations and normal modes in a system of two identical coupled air track gliders. Read More
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G2-27: COUPLED SERIES MASSES HANGING ON SPRINGS
Illustrate coupled oscillations and normal modes. Read More
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G2-28: COUPLED PENDULA WITH VARIABLE DRIVER
Show that the maximum coupling occurs between pendula of the same length. Read More
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G2-41: WILBERFORCE PENDULUM
Demonstrate a linear coupling resonance and normal modes. Read More
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G2-42: ELASTIC PENDULUM
Demonstrate a non-linear coupling resonance and stable fixed points. Read More
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