[填空题]
A 70-cm-diameter wheel accelerates 8pa.y pda :pueb9-p 8imlcc6*r9fyo( yk8 t9/+chfa* jmlqmwyx; 35tuniformly about its center from 130 rpm to 280 rpf 93y5lt *mytc;h/+w8xamjkq m 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
