[填空题]
(a) A grinding wheel 0.35 m in diameter rotates at 2500 rpm. Cal 1zo+ fh kl4q)lmpa:w/ezejh27tah,3 culate its angug p33p,oar7 mgi8yz,)vpy1mp lar vyr,o a8 ip1mg33p,p7 py)vzgmelocity 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$