[填空题]
A 70-cm-diameter wheem*j2 s6vuz+4c y 5gog 90augxil accehs 4g7/t w, a+h3ia ehk j+ad;-i+zwukf2tz8nlerates uniformly about its center from 130 rpm to 280 rpm in 4i is84+n+e-z dawugj h+,w h2atzhk7ak/f;t3 .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
