Massachusetts Institute of Technology
Sign in

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.

MIT Department of Physics Technical Services Group

MIT Department of Physics Technical Services Group

Category: Science | Updated almost 6 years ago

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


Viewed
39064 times

More from MIT Department of Physics Technical Services Group

Rubber and Glass Rods with Tinsel and Balloon

Rubber and Glass Rods with Tinsel a...

Added over 7 years ago | 00:02:02 | 41926 views

Physics Demo -- Magnetic Motor

Physics Demo -- Magnetic Motor

Added 8 years ago | 00:01:29 | 75083 views

Laser Diffraction and Interference

Laser Diffraction and Interference

Added 7 years ago | 00:02:25 | 39906 views

MIT Physics Demo -- Low Friction Atwood Machine

MIT Physics Demo -- Low Friction At...

Added almost 8 years ago | 00:00:46 | 49548 views

Balloons in Liquid Nitrogen

Balloons in Liquid Nitrogen

Added over 7 years ago | 00:01:18 | 48608 views

MIT Physics Demo -- Resonant RLC Circuit

MIT Physics Demo -- Resonant RLC Ci...

Added 8 years ago | 00:00:46 | 56146 views