PHY138 – Waves, Lecture 2 “Physics is like sex: sure, it may give some practical results, but that’s not why we do it.” - Richard Feynman, Nobel Laureate.

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PHY138 – Waves, Lecture 2 “Physics is like sex: sure, it may give some practical results, but that’s not why we do it.” - Richard Feynman, Nobel Laureate

Reading Assignment Next week’s reading is Knight Chapter 20, Sections 20.1 – 20.7. There is a pre-class quiz on www.masteringphysics.com for this material due on Monday morning. A www.masteringphysics.com Problem Set on Chapter 14 is due on Friday at 5:00PM.

PHY138 – Waves, Lecture 2 Today’s overview Hooke’s Law and Oscillation of Springs Hanging Springs The Pendulum Damped Oscillations; Shock Absorbers Driven Oscillations; Resonance

Mass on Spring versus Pendulum Mass on a Spring Pendulum Condition for S.H.M. Small oscillations Small angles Angular frequency Period

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