[填空题]
(a) A grinding wheel 0.35 m in p5jtxm :)ojz76wh m3b4q1snm*vg.n bdiameter 8p3ie v0 qrl98 13xdoosrywft, b*vo0rotates at 2500 rpm. Calculate its angula w1o*o0r v8lofr,93bd8et vsp y30iqxr 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$