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Communication of the Week:

  • 2018.05.14: "Thank you for doing what you do. You've gotten me through two years of physics and I only wish I had the opportunity to be one of your students. I hope that you know that you are teaching the next doctors and engineers who will each take their own impact on this world. And one of the reasons they did it and got to where they are was because of you :) Thank you so much" wayne peterson - YouTube Community Comment

Most Recent Video (2018.05.13)
Demonstrating What Changes the Period of Simple Harmonic Motion (8:22)
Period of simple harmonic motion is defined and demonstrated. Equations for period of mass-spring systems and pendulums are given. What changes the period is demonstrated. This is an AP Physics 1 topic.

Content Times:
0:01 Defining period, T
0:47 Demonstrating period
2:50 Period equations
4:00 Does amplitude affect T?
4:35 Does g affect T for mass-spring system?
4:54 Does mass affect T for pendulum?
5:40 Increase mass in mass-spring system?
6:01 Increase k in mass-spring system?
6:24 Increase pendulum length?
6:50 Increase g for a pendulum?
7:26 Does A really not affect pendulum?

Thank you to Anish, Kevin, and Olivia for being my “substitute students” in this video!
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  • Thank you to Aarti Sangwan, Sawdog, and Christopher Becke for being my Quality Control Team for this video.
  • Thank you to Youssef Nasr for transcribing the English subtitles of this video.