[填空题]
A 70-cm-diameter wheel aoa- 5tdw 3kin5qlc 1*nur,x 3p yasoi0,y5sp: 3m 9r7 /il jwe(9lxzwbccelerates uniformly about its center from 130 rpm to 280 rpm in 4.0 s. Determinl s,( 5iywas elx/ry pi9p:03rxz37,jmuo 9wbe (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
