[填空题]
Pilots can be tested for the stresses of flying highsptbu,vvu+h8 4l70hq txeed jets in a whirlirtt(,6hv s,d+g rqwr: ng “human centrifuge,” which takes 1.0 min to turn through 20 complete revolutions before reaching its final speed. :ghr vs+rt trdw(q6,, (a) What was its angular acceleration (assumed constant), $rev/min^2$ (b) what was its final angular speed in rpm? $rpm$