Скачать или смотреть PHYS 10 - Lecture 11 - Simple Harmonic Motion and Waves Intro

In this eleventh lecture in this 30-lecture set, we begin Chapter 5 by starting the transition from “single-object motion” to **oscillations and waves**. The key goal is to build the language you’ll use for the rest of the unit—**amplitude, period, frequency, phase, equilibrium, restoring force**—and to connect the big picture: waves are what you get when oscillators are linked together so a disturbance can travel.

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 “restoring” behavior), which leads to repeating, sinusoidal motion. We then reinforce the concepts with demos (mass-on-spring and pendulum) and finish by previewing how **coupled oscillators* are the bridge from oscillations to wave behavior.

Topics in this lecture:
• Oscillations + wave terminology: amplitude, period/frequency, phase, equilibrium, and restoring force
• 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 linking oscillators leads toward wave-like behavior

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

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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
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