ELEMENTS OF PHYSICS I
Physics 221

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CHAPTER 11
Vibrations and waves

NEW CONCEPTS

FORMULAS

Simple harmonic motion:

F = -kx

Frequency: f=1/T. Period:

\begin{displaymath}T = 2\pi \sqrt{m\over k}\end{displaymath}

Period of simple pendulum of length L:

\begin{displaymath}T = 2\pi \sqrt{L\over g}\end{displaymath}

Wave velocity:

\begin{displaymath}v = \lambda f\end{displaymath}

where $\lambda$ is the wavelength.

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