Question $3(5$ points$)$

A small fan has blades that have a radius of $0\mathrm{.}0990$ m $.$ When the fan is turned on$,$ the tips of the blades have a tangential acceleration of $28\mathrm{.}5\frac{m}{s^2}$ as the fan comes up to speed. What is the angular acceleration $$ of the blades $(ra\frac{d}{s^2})?$

Round your answer to the nearest integer.

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