L9-Oscillations

# L9-Oscillations - Oscillations Physics 7B Lecture 9 Prof...

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Oscillations Physics 7B - Lecture 9 Prof. Conway

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The Basic Idea If you have a system described by a parameter (position for example) where there is a force counteracting the parameter, the system oscillates Oscillations are, of course, the basis of waves. ..
Examples: 1D Oscillations mass on a spring vibrating string diatomic molecule pendulum RLC circuit All of these can be described as “simple harmonic oscillators”

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Mass and Spring consider a mass connected to a spring the mass slides frictionlessly on a horizontal surface the mass oscillates in 1 dimension:
Mass and Spring If mass is displaced from its initial (unstretched) position, there is a force tending to push it back to the middle, where there is zero force: F F F=0 Hooke’s Law: 1676 ceiiinosssttuv

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Hooke’s Law “with the extension goes the force” the force is proportional to, and opposed to, the displacement of the mass F = -kx k: spring constant (N/m)
Double Spring - PRS Suppose we have a mass connected to two springs with spring constant k.

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L9-Oscillations - Oscillations Physics 7B Lecture 9 Prof...

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