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!

MIT Department of Physics Technical Services Group

MIT Department of Physics Technical Services Group

Category: Science | Updated over 1 year ago

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


Viewed
36161 times

More from MIT Department of Physics Technical Services Group

MIT Physics Demo -- Resonant RLC Circuit

MIT Physics Demo -- Resonant RLC Ci...

Added over 6 years ago | 00:00:47 | 49038 views

MIT Physics Demo -- Microwave Polarization

MIT Physics Demo -- Microwave Polar...

Added over 6 years ago | 00:01:14 | 34703 views

Ring Falling in a Magnetic Field

Ring Falling in a Magnetic Field

Added 3 years ago | 00:03:27 | 10298 views

Bell Labs Wave Machine: Superposition

Bell Labs Wave Machine: Superposition

Added over 3 years ago | 00:00:34 | 11364 views

Laser Diffraction and Interference

Laser Diffraction and Interference

Added over 5 years ago | 00:02:25 | 36807 views

Hinged Stick and a Falling Ball

Hinged Stick and a Falling Ball

Added over 4 years ago | 00:01:23 | 19437 views