[填空题]
(a) A grinding wheel 0.35 m in diameter rotates at 2500 rpm. Cax m58gpv4;f4ou b2z jolculate )busrz4 ,(5 cmlsgf l7its angular velocity5uf(r cmg4)bsz,7ll s in $rad/s$ $\omega$ = $rad/sec$
(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$