[填空题]
(a) A grinding wheel 0f15hxlki d wxf80w0 m-ck5a2zwvv(ad f)d eoh: j.p o8*99wgi9 l;+ww-i prid.35 m in diameter rotates at 2500 rpm. Calculate its angulag riwplpoewa.jd(*ww 8 h:i fvo+)99d9 ; -vidr 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$