[填空题]
A 70-cm-diameter wheh49.syn a9 6 ;o uuhet0mvt6eoel accelerates uniformly about ionesbkdh+5zcgj2 z6lb/5;9 its center from 130 rpm to 280 rpm in 4.0 s. Dete9oz5ezj56/sgk +h 2bn ;cdlbirmine (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
