[填空题]
A hollow cylinder (hoop) is r+c uf:h0i*c y7 s7ciipolling on a horizont1:yzreq3ez id2 ;e tm0al surface at speed v=3.3 $m/s$ when it reaches a 15 $^{\circ} $ incline. (a) How far up the incline will it go? $\approx$ m (round to one decimal place) (b) How long will it be on the incline before it arrives back at the bottom? s
Post time 2025-2-18 20:00:22
