[填空题]
(a) A grinding wheel 0.35 m in diameter rotates at 2500:)i 5ynk/ fv6 8z izftangb5,i rpm. Cqa m77-p m +z9yfnq6kemy+qk. alculate its angular velocity fe-mq kyk+7y a7qm n6 p+.m9qzin $rad/s$ $\omega$ = $rad/sec$
(b) What are the linear speed and acceleration of a point on the edge of the grinding wheel? v = $m/s$ $a_R$ = $ m/s^2$