Massachusetts Institute of Technology
Sign in Create Account

MIT Physics Demo -- Driven Mechanical Oscillator

A mass on a spring is driven by a large geared motor apparatus, and exhibits resonance at the appropriate frequency. Below resonance, the driving motion is in phase with the motion of the mass. At resonance the mass is 90 degrees out of phase with the driving motion, and above resonance it is 180 degrees out of phase. Note the amplitude of motion difference when the system is at resonance.

Driven mechanical oscillation is directly analagous to the oscillation of current in an RLC circuit, where the capacitor is like the spring, the inductor is like the mass, and the resistor is like air friction. Read more about harmonic oscillation here.

Comments (0)

It looks like no one has posted a comment yet. You can be the first!

You need to log in, in order to post comments. If you don’t have an account yet, sign up now!

May 02, 2008 12:19
Creative Commons Attribution-NonCommercial (What is this?)
Additional Files

37263 times

More from MIT Department of Physics Technical Services Group

MIT Physics Demo -- Resonant RLC Circuit

MIT Physics Demo -- Resonant RLC Ci...

Added 7 years ago | 00:00:47 | 50915 views

Push Me, Pull You

Push Me, Pull You

Added over 6 years ago | 00:01:42 | 34877 views

MIT Physics Demo -- Conductivity of Ionized Water

MIT Physics Demo -- Conductivity of...

Added 7 years ago | 00:00:53 | 47436 views

Soap Film Oscillation

Soap Film Oscillation

Added 6 years ago | 00:04:27 | 46842 views

A Heat Gun

A Heat Gun

Added 2 years ago | 00:01:17 | 3620 views

Fluorescent and Neon Tubes in an Electric Field

Fluorescent and Neon Tubes in an El...

Added over 5 years ago | 00:02:02 | 35535 views