细线AO和BO下端系一物P细线长AO>BO,A.B两端在同一水平线,开始时两线刚好绷直,BO处于竖直方向.细线AO.BO的拉力设为Fa.Fb保持端点A.B在同一水平线A不动B向右移.在A.B逐渐远离中,物体P保持不动,求Fa
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![细线AO和BO下端系一物P细线长AO>BO,A.B两端在同一水平线,开始时两线刚好绷直,BO处于竖直方向.细线AO.BO的拉力设为Fa.Fb保持端点A.B在同一水平线A不动B向右移.在A.B逐渐远离中,物体P保持不动,求Fa](/uploads/image/z/14732595-27-5.jpg?t=%E7%BB%86%E7%BA%BFAO%E5%92%8CBO%E4%B8%8B%E7%AB%AF%E7%B3%BB%E4%B8%80%E7%89%A9P%E7%BB%86%E7%BA%BF%E9%95%BFAO%3EBO%2CA.B%E4%B8%A4%E7%AB%AF%E5%9C%A8%E5%90%8C%E4%B8%80%E6%B0%B4%E5%B9%B3%E7%BA%BF%2C%E5%BC%80%E5%A7%8B%E6%97%B6%E4%B8%A4%E7%BA%BF%E5%88%9A%E5%A5%BD%E7%BB%B7%E7%9B%B4%2CBO%E5%A4%84%E4%BA%8E%E7%AB%96%E7%9B%B4%E6%96%B9%E5%90%91.%E7%BB%86%E7%BA%BFAO.BO%E7%9A%84%E6%8B%89%E5%8A%9B%E8%AE%BE%E4%B8%BAFa.Fb%E4%BF%9D%E6%8C%81%E7%AB%AF%E7%82%B9A.B%E5%9C%A8%E5%90%8C%E4%B8%80%E6%B0%B4%E5%B9%B3%E7%BA%BFA%E4%B8%8D%E5%8A%A8B%E5%90%91%E5%8F%B3%E7%A7%BB.%E5%9C%A8A.B%E9%80%90%E6%B8%90%E8%BF%9C%E7%A6%BB%E4%B8%AD%2C%E7%89%A9%E4%BD%93P%E4%BF%9D%E6%8C%81%E4%B8%8D%E5%8A%A8%2C%E6%B1%82Fa)
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