Lecture 30: Simple Harmonic Oscillations - Energy Considerations - Torsional Pendulum
recorded by: Massachusetts Institute of Technology, MIT
published: Oct. 10, 2008, recorded: November 1999, views: 26626
released under terms of: Creative Commons Attribution Non-Commercial Share Alike (CC-BY-NC-SA)
Download mit801f99_lewin_lec30_01.m4v (Video - generic video source 107.4 MB)
Download mit801f99_lewin_lec30_01.rm (Video - generic video source 108.6 MB)
Download mit801f99_lewin_lec30_01.flv (Video 108.3 MB)
Download mit801f99_lewin_lec30_01.wmv (Video 440.7 MB)
Report a problem or upload filesIf you have found a problem with this lecture or would like to send us extra material, articles, exercises, etc., please use our ticket system to describe your request and upload the data.
Enter your e-mail into the 'Cc' field, and we will keep you updated with your request's status.
1. SHO of a Physical Pendulum:
The SHO equation of motion (small angle approximation) for a rigid body pendulum is derived from the torque equation about the point of suspension. The periods of oscillation are worked out for four different shapes (rod, hoop, disk and for a billiard ball hanging from a massless string).
2. SHO of a Liquid in a U-Tube:
The SHO equation of motion for a liquid sloshing in a U-shaped tube is derived by taking the time derivative of the conservation of mechanical energy. The angular frequency and period are calculated and compared to empirical data.
3. Torsional Pendulum:
The SHO equation of motion for a torsional pendulum is derived from the torque equation about the center of mass. The displacement angle is in the horizontal plane. The restoring torque is due to the twisted wire; no small angle approximations are required. The demo uses piano wire.
Link this pageWould you like to put a link to this lecture on your homepage?
Go ahead! Copy the HTML snippet !