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A mechanical or electronic system or device that works on the principles of oscillation, that is a periodic fluctuation between two things based on changes in energy. These range from abstract models such as a harmonic oscillator to electrical devices such as an LC circuit.

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Deduce how much does damping affect the angular frequency of a harmonic oscillator

When you factor out the $\omega_o^2$ you get $\omega$ = $\omega_o \sqrt {1 - (\gamma ^2/\omega_o^2)/4}$. I cannot remember from my first year waves lecture but I think $\gamma ^2/\omega_o^2$ equals t …