An electric fan is turned off, and its angular velocity decreases uniformly from $600$ rev$/$minrev$/$min to $200$ rev$/$minrev$/$min in $5\mathrm{.}00$ ss$.$

Find the number of revolutions made by the motor in the $5\mathrm{.}00$ ss interval.

Part A

Part complete

Find the angular acceleration in rev$/$s$2$rev$/$s$2.$