[填空题]
(a) A grinding wheel 0.35 m iz,ww; oup n qbp;m+u(x+a4bi9n diameter rotates at 2500 rpm. Calcul 4a5 /r)zklyk2ecmpq aatb:+/ ate its angular :k)/qma4tc/ e azrbayk5+ l2pvelocity 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$