[填空题]
Pilots can be tested for the stresses of c1ocqh0 6b7zlflying highspeed jets in a whirling “hu106bc 7qolhz coem (ejlw 6yj6s (m-a1man centrifuge,” which takes 1.0 min to turn through 2mm j1lj (6-esw 6aoe(y0 complete revolutions before reaching its final speed. (a) What was its angular acceleration (assumed constant), $rev/min^2$ (b) what was its final angular speed in rpm? $rpm$