[填空题]
Pilots can be tested for the stresses of flying highspeed bl5v k:jsor.5v /lx :qjets in a wxhq 9,fzk*1e d(jx xe)n9z .xrhirling “human centrifuge,” which,1xxq d(f9eehrz) z*xnj.9kx takes 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? $rpm$