[填空题]
(a) A grinding wheelv)g *uw9v9j6kscna) z 4pt0 * at08:zpnlr/gx h,o aor0.35 m in diameter rotates at 2500 rpm. Calculate its angular velocoap 4 lr/txr,ph*0z 8o gnat0:ity 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$