[填空题]
A 70-cm-diameter wheel accelxuny.-x 7s sk51cd* f-,ah/ (-8meqmtosmfq zeri8 ru)t5 9 z)*lk cb;xt6szw.gc.jzmb ates uniformly about its center from 130 rpm to 280 rpm in)9w czb*zztujg lx)ksmb;86 cr .i.t5 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
