School of Physics Lecture Demonstration Manual

Wd-3 Forced Harmonic Motion (2)

Published: Wednesday 15 March 2006 - Updated: Wednesday 30 March 2011

Aim

To demonstrate large amplitude oscillations of a body at resonance.

Apparatus

Mass on a spring

Diagrams

Click on pictures to enlarge.

Forced harmonic Motion

FHM Diagram2

Videos

Forced Harmonic Motion

Description

A simple mass on a spring is driven via hand crank. When the driving frequency approaches the resonant frequency of the mass and spring the amplitude of oscillation increases significantly.

Safety notes

Maintenance 

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