Physics 104 – Spring 2014 Intro and Harmonic Oscillator Energy American Maglev Technology, Inc. Jan 2011 Powder Springs, GA

Intro and Syllabus Physics 104 General Physics: Thermodynamics, Electromagnetism, Optics Spring 2014 Syllabus Instructor: Nat Hager, Research Scientist, Physics and Engineering 173 Masters/Esbenshade (behind mineral gallery) - also forwards to smartphone. (OK to nag if I don’t reply in a day or Web: msi-sensing.com/etown.htm or public directory “hagerne”msi-sensing.com/etown.htm Phone: Office/Lab Home: before 9:00 PM. Please leave a message. Office Hours: Monday, Tuesday 1:00 – 2:00 PM Or by appointment. Please feel free to stop by my lab anytime, if my door is closed please leave a note. Class Hours: Mon/Tue/Fri 11:00 AM – 12:20 PM All classes in Nicarry 228. All class periods are the same format. Discussion topics will be covered in all sessions. Lab: Tue/Fri 2:00 – 3:50 PM Prerequisites: Physics 103 or equivalent Textbook: Giancoli, D.C., Physics, Sixth Edition, Prentice Hall, Supplemental Texts: Many Resources in the Physics Hideaway in Esbenshade including: Boyle, J, Study Guide: Physics (Giancoli), Prentice Hall, 2004.

Procedures Same as Physics 103 – WebAssign (setup) – Quizzes (5) – Exams (3) – Lab – Final – Powerpoints – Equation sheets

Topics Waves and Sound (Ch ) Thermodynamics (Ch ) Electricity and Magnetism (Ch ) Optics (Ch. 23) We’re trying to cover a lot, so we’ll have to skip around some. (almost never do starred sections)

General Differences with Physics 103

Simple Harmonic Oscillator A little Physics 103 Jumping-off point for Waves

Simple Harmonic Oscillator Object subject to restoring force around equilibrium: F = - kx – Force proportional to and opposite displacement – Oscillatory motion around equilibrium – Rate determined by mass m and k – Frictional damping Examples – Block on a spring (car on springs) – Meter stick anchored one end (diving board) – String in guitar (sound wave) – Object bobbing in water – Molecule in crystal lattice

Energy in Harmonic Oscillator

Harmonic Oscillator Terminology Cycle – One complete oscillation Amplitude – x = -A to x = +A Period – time to make one cycle Frequency – # cycles per second Frequency vs. Period – f = 1/T – T = 1/f

Example Part 1

Example Part 2

Example Part 3

Example Part 4

Example – Problem 23

Example – Problem 13

Vertical Harmonic Oscillator

Summary - Harmonic Oscillator Energy