如图,两根固定的光滑硬杆OA,OB成
角,在杆上分别套一小环P,Q(小环重力不计),并用轻线相连.现用恒力F沿
方向拉小环Q,则当两环稳定时,轻线上的拉力的大小为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://img.xkw.com/dksih/QBM/2020/3/4/2412201862471680/2412922057048064/STEM/dbe9748c5fd94b1fb4b4c7e0114745a9.png?resizew=175)
更新时间:2020-03-05 12:05:24
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