已知秤砣的质量是1kg秤杆上0.5kg和2.5kg的两根刻度线相距10cm,自重不计,求秤勾连接点与提纽距离

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• 已知秤砣的质量是1kg秤杆上0.5kg和2.5kg的两根刻度线相距10cm,自重不计,求秤勾连接点与提纽距离
• 一道物理题小王所在的科技小组利用所学知识自制一杆秤（自重不计）．若已知AO= L1,BO=L2,秤砣的质量m0,为1kg,则此杆秤B处应标的质量值为 ▲ kg.已知秤杆上0.5kg和2.5kg的两根刻度线相距l0cm,则L1 ▲ cm．在杆秤O处左侧25cm处应标的质量值为 ▲ kg.
• 已知秤砣的质量是1kg秤杆上0.5kg和2.5kg的两根刻度线相距10cm,自重不计,求秤勾连接点与提纽距离
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• A uniform solid sphere of mass M and radius R is placed on a ramp inclined at an angle θ to the horizontal.The coe\x0efficient of static friction between sphere and ramp is \x16μs.Find the maximum value of \x12 for which the sphere will roll without slipping,startingfrom rest,in terms of the other quantities.(Hint one:the moment of inertia of a sphere is 2/5MR2.Hint two:write the "no slip" condition as |acm|=Rα where acm is the linear acceleration of