A yo-yo has a rotational inertia of \( 950 \mathrm{~g} \mathrm{~cm}^{2} \) and a mass of \( 120 ...

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A yo-yo has a rotational inertia of \( 950 \mathrm{~g} \mathrm{~cm}^{2} \) and a mass of \( 120 \mathrm{~g} \). Its axle radius is \( 3.2 \mathrm{~mm} \), and its string is \( 120 \mathrm{~cm} \) long. The yo-yo rolls from rest down to the end of the string.
As it reaches the end of the string, what are its angular speed?
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