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平面彙交力系平衡的必要和充分條件是
平面彙交力系平衡的必要和充分條件是
更新时间:2025-09-10 11:30:16

  1、平面彙交力系平衡的必要與充分條件:平面彙交力系的合力等于零。

  2、各力作用線在同一平面内的力系稱為平面力系,平面力系中各力作用線彙交于一點的力系稱為平面彙交力系。力系平衡的充要條件:力系的力多邊形自行封閉(自行封閉力多邊形所得各力的指向是實際指向)。

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