[填空题]
(a) A grinding wheel 0.35 m in diameter rotates at 2500 rpm. Calculfwuin ghl s/4,t)r.8 *t8xvi late its an8 *gc* d.7bqx.jetlvogular velocity inox*d*bl 7.t e qc8gv.j $rad/s$ $\omega$ = $rad/sec$ (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$