[填空题]
(a) A grinding wheel 0.35 m in diameter rotatw vq.xr t9o8b-es at 2500 rpm. Calculate its ac:cy03bj wp;l8 -ecucngular velocity i- pb08lcjy3cuwcc ;e: 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$