[填空题]
A 70-cm-diameter wheel accelerates ga8rk c9kmg2i rh1c; *uniformly about iw-iu3:r)-ccn ik/qr+szw c,9hqhp : e ts center from 130 rpm to 280 rpm iwqc:c+hprik3), rz:h/9 s-qie- cnu wn 4.0 s. Determine (a) its angular acceleration,$\approx$ $rad/s^2$(Round to one decimal places) (b) the radial and tangential components of the linear acceleration of a point on the edge of the wheel 2.0 s after it has started accelerating. $a_R$ $m/s^2$ $a_{tan}$ $m/s^2$
Post time 2025-2-18 20:00:22
