[填空题]
A hollow cylinder (hoop) is rolling on a horizontal surface jv3 k/uud*bm* q aa75lat speed v=3.3 eai3z wf hbos+npgay19904-f $m/s$ 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
