- 2018.04.24: "Hello. Ive been out of school since 2012. I never studied physics in school. I always enjoyed maths and thought I would enjoy physics so in September bought the leaving cert physics book (the leaving cert is the series of exams done at the end of school in Ireland on the subjects you've chosen in order to apply for colleges) to have a structure to my study. You sir have been my teacher. Billy, Bobby and Bo my classmates. Your videos my classroom. I want to say the biggest and most sincere thank you. Your videos are well produced informative and I presume take time put together. They allow me see and make sense of what the textbook is trying to say. You are my first port of call when searching on YouTube. Thank you for teaching me I enjoy learning with you 😊" Aaron Marsh - YouTube Community Comment
Most Recent Video (2018.04.22)
When is a Pendulum in Simple Harmonic Motion? (6:32)
Demonstrating when a pendulum is in simple harmonic motion. This is an AP Physics 1 topic.
0:09 Reviewing simple harmonic motion
0:24 Showing a pendulum in simple harmonic motion
1:47 Velocities in simple harmonic motion
2:15 Accelerations in simple harmonic motion
2:57 A pendulum’s restoring force
5:07 A maximum of 15°
Thank you to Anish, Kevin, and Olivia for being my “substitute students” in this video!