[填空题]
(a) A grinding wheel38 xbe2gg9bqt mng15 l 0.35 m in diam ac. 1lbbewos/4wk5-ljifx+ 3eter rotates at 2500 rpm. Calculate its angular vela-l oe w 1/x4sbjwkcf3.5+ bliocity 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$