[填空题]
A 70-cm-diameter wheel a*lfh8-gfd u h-2fs eh 9fdp,;gccelerfoqe 3fkl52 9 .*nzztqq43uwe1 z cz z*(u3sjdates uniformly about its center from 130 rpm to 280 rpm in 4.0 s. Det zef3qz zsu3qz(qk z1je *l9u24 35cf*dto.n wermine (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
