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PHY221 Ch21: SHM 1.Main Points: Spring force and simple harmonic motion in 1d General solution a Cos  t+  Plot x, v, a 2.Example Vertical spring with.

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Presentation on theme: "PHY221 Ch21: SHM 1.Main Points: Spring force and simple harmonic motion in 1d General solution a Cos  t+  Plot x, v, a 2.Example Vertical spring with."— Presentation transcript:

1 PHY221 Ch21: SHM 1.Main Points: Spring force and simple harmonic motion in 1d General solution a Cos  t+  Plot x, v, a 2.Example Vertical spring with mass and oscillation around equilibrium Why are springs important: Systems close to equilibrium

2 PHY221 Ch21: SHM 1. Main Points 1.1 Spring force and simple harmonic motion in 1d

3 PHY221 Ch21: SHM 1. Main Points 1.1 Spring force and simple harmonic motion in 1d

4 PHY221 Ch21: SHM 1. Main Points 1.2 General solution a Cos  t+ 

5 PHY221 Ch21: SHM 1. Main Points 1.3 Plot x, v, a

6 PHY221 Ch21: SHM 2. Examples 2.1 Vertical spring with mass and oscillation around equilibrium Now let’s look at a spring and mass m hanging from, say, the ceiling:

7 PHY221 Ch21: SHM 2. Examples 2.2 Why are springs important (cont’d) Comment on Taylor series expansion: a. Preliminaries: quadratic approximation of a function U(x) around a value x e

8 PHY221 Ch21: SHM 2. Examples 2.2 Why are springs important: Systems close to equilibrium

9 PHY221 Ch21: SHM 2. Examples 2.1 Vertical spring with mass and oscillation around equilibrium


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