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Question Number 54163 by ajfour last updated on 30/Jan/19
Commented by ajfour last updated on 30/Jan/19
$${If}\:{the}\:{pulley}\:\left({disc}\right)\:{rolls}\:{a}\:{bit}\:{to}\:{and} \\ $$$${fro}\:{about}\:{the}\:{equilibrium}\:{poition}, \\ $$$${find}\:{the}\:{time}\:{period}\:{of}\:{such}\:{small} \\ $$$${oscillations}. \\ $$