PHYS 10 - Lecture 11 - Simple Harmonic Motion and Waves Intro скачать в хорошем качестве

PHYS 10 - Lecture 11 - Simple Harmonic Motion and Waves Intro

In this eleventh lecture in this 30-lecture set, we begin Chapter 5 by introducing key concepts for *oscillations and waves**. The key goal is to build the language you’ll use for the rest of the unit—**period, frequency, amplitude,* and other wave terms—and to connect the big picture, emphasizing the ubiquitousness of oscillations and wave phenomena. We start with terminology and a broad introduction to oscillations, then focus on what makes a motion *simple harmonic* (and what does *not*). In particular, we look at the signature idea of SHM: acceleration points back toward equilibrium and is proportional to displacement (the “Hooke's Law” behavior), which leads to repeating motion with a fixed frequency. We then reinforce the concepts with demos (mass-on-spring and pendulum) and finish by illustrating resonance with **coupled oscillators**. Topics in this lecture: • Oscillations + wave terminology: period, frequency, amplitude, and more • Intro to oscillations: what causes repetitive motion and what “equilibrium” means physically • Simple harmonic motion: the key relationship between displacement and restoring acceleration • Mass-on-spring and pendulum demos: what sets the period, and what changes the motion • Coupled oscillators: how resonance explains the slow transfer of energy between coupled oscillators Textbook (free, online on LibreTexts): https://coaphys.xyz/phys10book Recommended reading: Chapter 5 (Oscillations & Waves), sections on oscillations terminology, SHM, mass-spring/pendulum motion, and coupled oscillators ────────── Lecture 11 of 30-ish in "Physics 10 in 30 Lectures" 0:00:00 - Lecture 11 Intro 0:02:16 - Chapter 5 Overview 0:21:26 - Oscillations and Waves Terminologies 0:44:46 - Intro to Oscillations 1:13:10 - Simple Harmonic Oscillator Motion 1:19:27 - Mass-on-Spring and Pendulum Demo 1:35:43 - Coupled Oscillators ──────────