Chapter_15

# Chapter_15 - Chapter 15 Oscillatory motion Reading...

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We’ll deal mainly with simple harmonic oscillations where the position of the object is specified by a sinusoidal function. Mass on a spring Energy Pendulum Chapter 15: Oscillatory motion Reading assignment: Chapter 15.1 to 15.5; 15.6 & 15.7 cursory Homework : QQ1, QQ2, QQ3, QQ4, QQ6, OQ1, OQ3, OQ, 4, OQ5, OQ7, OQ9, OQ10, AE1, AE6, 4, 5, 8, 9, 15, 18, 19, 27, 29, 37 Due date:Tuesday, April 26

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Simple harmonic motion/oscillation - Block attached to a spring - Motion of a swing - Motion of a pendulum (mathematical, physical) - Vibrations of a stringed musical instrument - Motion of a cantilever - Oscillations of houses, bridges, … - All clocks use simple harmonic motion Piezoelectric (quartz) tuning fork from a wrist watch (In a piezoelectric material, distortion creates voltage and vice versa)
Harrison’s H1 1735 Harrison’s H4 1759 Brief Aside: The Importance of Time & The Longitude Problem http://www.rog.nmm.ac.uk/museum/harrison/longprob.html 1) Determine local time through sun. 2) Compare with time (accurate clock!) at port of departure (London). 3) Each hour difference corresponds to 15o longitude (360o/24 hours).

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Simple harmonic motion/oscillation Restoring force : F = - k·x Acceleration and restoring force: - proportional to x - directed toward the equilibrium position Acceleration : x m k a - =
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Chapter_15 - Chapter 15 Oscillatory motion Reading...

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