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平面汇交力系平衡的必要和充分条件是
更新时间: 2021-06-21 15:16:48  

1、平面汇交力系平衡的必要与充分条件:平面汇交力系的合力等于零。

2、各力作用线在同一平面内的力系称为平面力系,平面力系中各力作用线汇交于一点的力系称为平面汇交力系。力系平衡的充要条件:力系的力多边形自行封闭(自行封闭力多边形所得各力的指向是实际指向)。

关键词: 平面 平衡 必要 充分 条件

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