[填空题]
Pilots can be tested for the stresses of flyinge/c9 40jm ngs7ototj) highss7. 5)(g xti0kcls vqdpeed jets in a whirling “human centrifuge,” which takes 1.0 min to turn through 20 completqvg7)tls (k.5s0d xice 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? $rpm$