[填空题]
(a) A grinding wheel 0.35 m in diameter edb3wt *,mdlq-w ) ra,rotates at 2500 rpm. Calce ,: rcucf+ja;xin djc ,g(6wqv-4 k(nulate its angular velocitye (:jf, jncuqrg6w, ik4-nd+v( ;cacx 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$