[填空题]
Pilots can be tested for the stresses of flying h:xmp83 leqx; y1 uf8ohqmuvh t57kcp+y/e2 -h ighspeed jets in a whirling “human centrifuge,” which - e/ 2k+qhtcvp5u7hymtakes 1.0 min to turn through 20 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? $rpm$