[填空题]
A 70-cm-diameter wheel accelerates uniformly abouttj-j7jezm)bc 0 r 9q9v its center frovi:oa*l ot07fm9qp do* a )v3jfu+ s8em 130 rpm to 280 rpm in 4.0 s. laqdi:9o 7)*m8j0*v+fvspueof3o at 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
