A spider's web can undergo simple harmonic motion when a fly lands on it and displaces the web. For simplicity, assume that a web obeys Hooke's law (which it does not really as it deforms permanently when displaced). If the web is initially horizontal, and a fly landing on the web is in equilibrium when it displaces the web by 0.030 mm, what is the frequency of oscillation when the fly lands?

a. 79 Hz
b. 82 Hz
c. 88 Hz
d. 91 Hz
e. 110 Hz

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