[填空题]
(a) A grinding wheel7v+th p q03xvt1ps* ka 0.08xx-g 8hfn(1hrtt p u35 m in diameter rotates at 2500 rpm. Calculate its angular veloh rx 1tn-8hf8ug(t0p xcity 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$