[填空题]
Pilots can be tested for d m*mnm.o qcytwo dvm/i*3*lv.0x:m:the stresses of flym.w o frpsf( b3*8h1vpmmv96 fing highspeed jets in a whirling “human centrifuge,” which takes 1.0 min to turn through 20 comple3h.v p*p6f m(m1osvmb9fwrf8te 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? $rpm$