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The equation of a damped simple harmonic motion is $m \frac{d^{2} x}{d t^{2}} + b \frac{d x}{d t} + k x = 0$ . Then the angular frequency of oscillation is
$ω = (\frac{k}{m} - \frac{b^{2}}{4 m^{2}})^{1 / 2}$
$ω = (\frac{k}{m} - \frac{b}{4 m})^{1 / 2}$
$ω = (\frac{k}{m} - \frac{b^{2}}{4 m})^{1 / 2}$
$ω = (\frac{k}{m} - \frac{b^{2}}{4 m^{2}})$

A

ω = (\frac{k}{m} - \frac{b^{2}}{4 m^{2}})^{1 / 2}

B

ω = (\frac{k}{m} - \frac{b^{2}}{4 m})^{1 / 2}

C

ω = (\frac{k}{m} - \frac{b}{4 m})^{1 / 2}

D

ω = (\frac{k}{m} - \frac{b^{2}}{4 m^{2}})

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