[填空题]
A 70-cm-diameter wheel accelerates unif7s g 3 pw( uu5gj xck;vbq .:1oh:ysqtxz5c15tormly about its center from 130 rkya sk +hlm x7j+)qo6,pm to 280 67s+,k yajh+q m)l xkorpm 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
