[填空题]
A 70-cm-diameter wheel awkh8bjkf 9/b3s (ls:sccelerates uniformly about cr s6 eyb ( vm-w*nfqq)-5sx3bits center from 130 rpm to 280 rpnq*5v) (x6cbs-w sbmre 3-fq ym in 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
