09锟竭匡拷锟斤拷锟斤拷計锟斤拷锟絵锟斤拷锟街匡拷锟斤拷锟斤拷
锟斤拷源锟斤拷锟竭匡拷锟絎(w锟斤拷ng) 2009-08-13 11:48:38
锟斤拷锟斤拷09锟竭匡拷計锟斤拷锟絵锟斤拷锟街匡拷锟斤拷锟斤拷
锟斤拷锟斤拷1锟斤拷锟斤拷D锟斤拷示锟斤拷ABC锟斤拷一锟斤拷锟解滑锟芥，AB锟斤拷饣拷A锟斤拷锟斤拷锟诫徑R=9.8m锟斤拷BC锟斤拷锟斤拷锟斤拷L锟侥光滑水平锟斤拷锟斤拷锟斤拷锟斤拷B锟絚锟絚锟紸锟斤拷锟斤拷锟斤拷锟斤拷锟絴(zh锟斤拷)锟斤拷锟斤拷m1=0.2Kg锟侥伙拷锟終锟斤拷锟斤拷B锟絚锟斤拷锟絴(zh锟斤拷)锟斤拷锟斤拷m2=0.1Kg锟侥伙拷锟終锟斤拷v0=0.9m/s锟劫讹拷锟斤拷锟斤拷锟絓锟斤拷锟絚m1锟絣(f锟斤拷)锟斤拷锟斤拷撞锟斤拷锟斤拷撞锟絕锟斤拷锟叫沒锟斤拷锟斤拷锟斤拷锟絧失锟斤拷锟斤拷锟斤拷
锟斤拷锟�锟斤拷锟�1锟斤拷锟斤拷撞锟斤拷(j锟斤拷ng)锟絕锟斤拷锟絃锟絩锟絞m1锟斤拷m2锟絣(f锟斤拷)锟斤拷锟节讹拷锟斤拷锟斤拷撞锟斤拷
锟斤拷锟�锟斤拷锟�2锟斤拷锟节讹拷锟斤拷锟斤拷撞锟斤拷锟斤拷m1锟斤拷m2锟斤拷锟劫度烇拷锟斤拷锟斤拷
锟斤拷锟斤拷锟金案ｏ拷1锟斤拷锟斤拷1锟斤拷6.28s锟斤拷锟斤拷2锟斤拷v1'=0.4m/s锟斤拷v2'=0.7m/s
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