[填空题]
(a) A grinding wheel 0.35 m in diameter rotaz + fs5yz9esf qw x1tl/3fua;,tes at 2500 rpm. Calcula2qvxg6. wgb b 49uqnph4n0;yo aq7z(ote its angular vbv4n oh p.aq;b2 y0w497qx ( zgq6nguoelocity 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$