Chapter 15 Oscillations and Waves

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Chapter 15Oscillations and WavesMFMcGraw-PHY 2425Chap 15Ha- Oscillations -Revised 10/13/20122Oscillations and Waves Simple Harmonic Motion Energy in SHM Some Oscillating Systems Damped Oscillations Driven Oscillations ResonanceMFMcGraw-PHY 2425Chap 15Ha- Oscillations -Revised 10/13/20123Simple Harmonic MotionSimple harmonic motion (SHM) occurs when the restoring force (the force directed toward a stable equilibrium point) is proportional to the displacement from 2425Chap 15Ha- Oscillations -Revised 10/13/20124Characteristics of SHM Repetitive motion through a central equilibrium point. Symmetry of maximum displacement. Period of each cycle is constant. Force causing the motion is directed toward the equilibrium point (minus sign). F directly proportional to the displacement from = - 2 x DisplacementMFMcGraw-PHY 2425Chap 15Ha- Oscillations -Revised 10/13/20125A Simple Harmonic Oscillator (SHO)Frictionless surfaceThe restoring force is F = 2425Chap 15Ha- Oscillations -Revised 10/13/20126Frictionless surfaceTwo Springs with Different AmplitudesMFMcGraw-PHY 2425Chap 15Ha- Oscillations -Revised 10/13/20127SHO Period is Independent of the AmplitudeMFMcGraw-PHY 2425Chap 15Ha- Oscillations -Revised 10/13/20128The period of oscillation

Chapter 15 Oscillations and Waves. MFMcGraw-PHY 2425 Chap 15Ha-Oscillations-Revised 10/13/2012 2 Oscillations and Waves • Simple Harmonic Motion • Energy in SHM • Some Oscillating Systems ... and ( )( )5 0 cm 12 6 rads/sec 62 8 cm/sec 12 6 rads/sec 050 s 2 2 v Aω . …

  Chapter, Oscillations