Springs and Pendulums Explained: Hooke's Law and Simple Harmonic Motion | Physics Explained 5.4

Swings, springs, guitar strings and buoys all oscillate. This lesson covers Hooke's law (F = −kx) and how stiff car springs are, why a restoring force makes things oscillate, and amplitude, period and frequency. Then the period of a mass on a spring (T = 2π√(m/k)), a real car suspension in 3D going over a speed hump with and without its shock absorber, the simple pendulum (T = 2π√(L/g), independent of mass), and how to use a pendulum to measure gravity. It ends with a summary of the whole chapter. Chapters: 0:00 Intro 0:46 Hooke's law 2:03 Worked example: stiff car springs 2:55 Why things oscillate 3:37 Amplitude, period and frequency 4:27 The period of a mass on a spring 5:21 A real car suspension 6:15 The simple pendulum 7:31 Worked example: measuring g 8:43 Common mistakes 9:10 Recap 9:50 Check yourself 10:51 Up next Physics Explained, Chapter 5: Motion in Two Dimensions (lesson 4 of 4) Adapted from Physics by OpenStax (https://openstax.org/details/books/ph..., licensed under CC BY 4.0 (https://creativecommons.org/licenses/.... The animations and narration are original to Prime Mover. OpenStax is not affiliated with this channel and does not endorse it. Prime Mover: learn it, build it, share it.