[填空题]
(a) A grinding wheel 0.35 m in diameter rotates at 2500 rpm. Calculric g1jq1. vens*a ;,nawivbgvdzut-u 9 u3;,avarf3r(, kn: (te its angular veloci9 uw,nt rbvk a dr;g-3i(afvuz,(:v3u ty 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$