[填空题]
A 70-cm-diameter wheel acceler+h vuofbph8mx 0dn88 (f0fhh;ates uniformly abop wv5iw b- z32u0ydr-jr8j mz+ut its center from 130 rpm to 280 rpm in 4jv+zj wrbr5zy3d-p28 wm-i u0 .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
