[填空题]
(a) A grinding wheel 0.35 p 4(+x96sle 6lxjusg xv0s(p am in y lp:k cdb8h45+to8mt diameter rotates at 2500 rpm. Calculate its angulaomdt4y lcp5b: k+88t hr velocity 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$