[填空题]
A 70-cm-diameter wheeu5r0,( bry1 o qyp9fppl accelerates uniformly about its center;nke:z/izg;i54n-n7l:xk fj c k/v aiy z50xv from 130 rpm to 280 rpm in 4.5:nkk/f ync zxi;nvaj45 k7xv-g:le/; iz0i z0 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
