||Seth Major, smajor, 4919, G052
Tuesday 2 - ~5:00 PM
Mondays 2 - 4
MWF 10:00-10:50 AM Science Center G041
Halliday, Resnick, Walker, Fundamentals of Physics Extended, 10th Edition (same as Phys 190)
John Taylor, An Introduction to Error Analysis
Kleppner & Kolenkow and Simmons reading (on blackboard)
Thursday afternoons 1:00 - ~4:00 PM with Viva Horowitz in G034
Friday afternoons 1:00 - ~4:00 PM with Adam Lark in G034
- I have added the derivation of the wave equation (pdf). Have a look at this over the weekend so you can have a sense of what it is and places where you would like clarification.
- I have posted guide 4 and solutions for all three problem sets.
- The 2019 "Official 195 Measurement of g" is g = 9.84 +- 0.08 m/s^2.
Weekly Guides (pdf):
- Wolfram Alpha (launches a new tab):
- Clicker questions from lecture.
- Our derivation for transverse waves on a string.
- The Citicorp Center in NYC and the Taipei 101 Tower have tuned mass dampers. A book by Kohn, Katz, and Robertson has a schematic of the Citicorp Center mass. The building is 279 m high and has a period of around 6.5 s.
- Here's a pendulum in the Taipei 101 Tower. For more specifics see this article and "Wind and Earthquake Resistant Buildings", some of which is on google books.
- Here's the PhET wave simulation.
- Here's the PhET normal mode simulation. (Requires Flash.)
- The results are in! The 2019 measurement for g on the Hill is g = 9.84 +- 0.08 m/s^2! (This agrees with the previous average of 9.815 m/s^2. Given the variation in measurements I used the standard deviation of your results for the error.)
- The masses on springs videos: 1 and 2.
- A resonator exhibit at the Exploratorium.
- A video of a wine glass orchestra or harp.
- You can see more of the Tacoma Narrows bridge in this video.There's a 2006 American Journal of Physics article by Green and Unruh on a more careful modeling of the Tacoma Narrows bridge. (This link is to the arXiv where many physics papers are available to read without charge.) Last year APS News published a piece on this and the authors reminded us that the original accident report pointed out the non-resonant behavior of the bridge.
- Here is the Phet simulator on resonance.
- A XKCD comic on resonance.
- In class on Friday, February 8 we went through the `late time' or `steady state' solution of driven, damped, harmonic motion. Here are the notes (pdf) for the `brute force' approach of plugging the trial solution and working through the algebra.
- Millennium Bridge oscillation video.
- For a review of rotational dynamics see Chapter 10 of HRW.
- Galileo may have timed the swinging of the chandeliers in the Pisa cathedral. This one appears to be one of the "modern" ones installed in 1587.
- Here is the PhET spring mass-on-a-spring demo. Enjoy!
Last modified 15 February 2019