%0 Journal Article
%T 小问题? (34)
%J 力学与实践
%D 1985
%I 
%X 105.重量为P的物块系在可绕铰链A旋转的轻杆AD上,杆AD搁置在平板ABC上,设平板与物块D之间的摩擦系数为μ=0.4,AD和AC边的夹角为θ,OA=40cm,OB=20cm,OC=30cm,不计物块D的尺寸(图1)。求物块能放在平板上无滑动时θ角的最小值。(南通纺织专科学校黄又珩,引自R.C.希伯勒,工程力学) ...
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=0BF5C9FB031A532ED0A6D99DC4F6181A&aid=EEB02993A7EB9DD4542C3DBDB7A4F479&yid=74E41645C164CD61&vid=DF92D298D3FF1E6E&iid=B31275AF3241DB2D&journal_id=1000-0879&journal_name=力学与实践&referenced_num=0&reference_num=0