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**Unformatted text preview: **Chapter 15: Oscillations
151 What Is Physics? 152 Simple Harmonic Motion (SHM) 153 The Force Law for SHM 154 Energy in SHM 155 An Angular SHM 156 Pendulum 157 SHM and Uniform Circular Motion 158 Damped SHM 159 Forced Oscillation and Resonance Chapter 15 Homework 7, 13, 15, 24, 28, 34, 35, 38, 40, 41, 49, 63 Other Simple Harmonic Oscillators
SHM : d 2x dt 2 2 = - x T = 2 Torsion Pendulum = -
I T = 2 Physical Pendulum
I T = 2 mgh Simple Pendulum
L T = 2 g < 10 sin Examples
Sample Problem 15-4. Torsion Pendulum 12.4 cm, 135 g thin rod Ta = 2.53 s Unknown object X Tb = 4.76 s Find IX = ? T = 2 I Sample Problem 15-5. Pendulums Find and center of oscillation T = 2 I mgh T = 2 L g Damped and Driven Oscillations
Damped SHM 1-Undamped 2&3-Underdamped 4-Critically damped 5-Overdamped Driven / Forced SHM Natural frequency: Frequency of driving force: d Resonance: d = ...

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