[填空题]
(a) A grinding wheel 0.35 m in d2ifca;ilt( 4bv yl ,j0zd(l0e)/jqlt iam+ eiyqyfy5;-m6 ,aedvb4my:gxy)l4teter rotates at 2500 rpm. Calculate its angula y:;xve-44y 6ylbqd)f5,e+ yt gimmyar velocity 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$