[填空题]
Pilots can be tested for the stress - snv98g:;edusphv1 les of flying highspeed jets in a whirling/pj0w b98e (wr-)h xgx:rifcld ;4tc b “human centrifuge,” which takes 1.0 min to turn through 20 compled be4wgj:-xl 08/)i (brx9cc ftwhrp; te 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? $rpm$