Lecture Demonstrations Laboratory

The Demonstrations Manual

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Harmonic Motion: Pendula, Spring and Simple; Pendula, Conical and Torsional; Pendula, Physical (Sweet Spot); Projected Uniform Circular Motion; Damped Mass on Spring; Forced Oscillations; Hacksaw Blade Resonance; Resonance Wire Ring; Inverted Pendulum; Coupled Oscillators; Coupled Magnetic Oscillations; Lissajous Figures on the Scope; Lissajous Fifures with Laser; Parametric Amp
Waves
Acoustics
Instruments

Pendula, Physical (Sweet Spot)

Purpose:

To demonstrate the pendula made of physical objects with mass distributed.

Procedure:

The demo includes a meter stick on a pivot as well as a baseball bat on a pivot. A baseball bat can be used, z.B., to demonstrate the center of percussion (sweet spot) being different from the center of mass phenomenon.

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