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Physics 8.03 Vibrations and Waves

Physics 8.03 Vibrations and Waves. Lecture 2. Announcements for today. Pick up take-home experiment kits this week Where: Room 4-335 When: Today between 2 and 4pm Tuesday, Feb. 10 between 10am and noon Tuesday, Feb. 10 between 2 and 4pm

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Physics 8.03 Vibrations and Waves

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  1. Physics 8.03Vibrations and Waves Lecture 2

  2. Announcements for today • Pick up take-home experiment kits this week • Where: Room 4-335 • When: Today between 2 and 4pm Tuesday, Feb. 10 between 10am and noon Tuesday, Feb. 10 between 2 and 4pm • Take-home experiments manual posted

  3. Problem Set #1 • Problem Set #1 posted on web site • GET NEW VERSION • What’s on it? • Three problems on complex notation and superposition • Three on simple harmonic oscillators • One on damped harmonic oscillator(Need to make a matlab plot)

  4. More organizational things • Text books • Vibrations and Waves, by French (required) • Nearly every page used in 8.03 • EM vibrations, waves and radiation, by Bekefi and Barrett (required) • Lots of jumping around, pay attention to reading assignments • Optics, by Hecht (recommended) • Useful for Polarization, Interference, Diffraction

  5. More organizational things • Grades and recitation sections on the web • Part of a pilot system of web-based grade database • Activated • Anonymous (or otherwise) feedback • I will respond  be constructive • I will post your comments (anonymously) along with my response  avoid profanity

  6. Last time: Simple harmonic motion • Equation of Motion • Solutions in three forms • Quadratic potential  SHM

  7. Today: DAMPED HARMONIC MOTION • Finish up simple harmonic motion • Conservative forces, quadratic potentials and SHM • Approximate SHOs: the pendulum • Add damping term to equation of motion • Solutions depend on size of the damping • Lightly damped (under-damping) • Heavily damped (over-damping) • Critically damped

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