%0 Journal Article
%T 小问题? (39)
%J 力学与实践
%D 1986
%I 
%X 125.均质矩形物体ABCD置于斜面上,以跨过滑轮的细绳与重为W的另一物体相连。设物体ABCD重为P,宽AB=a,高BC=4a,与斜面间的摩擦系数μ=0.4,斜面斜率为3/4,细绳的AE段为水平(图1,图中未按比例)。不计滑轮摩擦,求使物体 ...
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=0BF5C9FB031A532ED0A6D99DC4F6181A&aid=3E170F183DDD174971135E8B278BF084&yid=4E65715CCF57055A&vid=5D311CA918CA9A03&iid=94C357A881DFC066&sid=6AC2A205FBB0EF23&eid=1D0FA33DA02ABACD&journal_id=1000-0879&journal_name=力学与实践&referenced_num=0&reference_num=0