[填空题]
(a) A grinding wheel 0.35 m in diameter rotates at 2500 rpm. Calculate iog:e; a-h raq6ts a (d7 (d)cpzhbingular velocity ihc(ddizpb7() n $rad/s$ $\omega$ = $rad/sec$ (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$