1.一根1m长的轻绳,一端固定于墙上,一段用手提在同一水平面上,现于绳的重点悬挂80N的重物,求:1)能否在手中以50N的力提起重物,此时绳的两端点水平距离多大?2)若绳能承受的最大力为40N,那
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![1.一根1m长的轻绳,一端固定于墙上,一段用手提在同一水平面上,现于绳的重点悬挂80N的重物,求:1)能否在手中以50N的力提起重物,此时绳的两端点水平距离多大?2)若绳能承受的最大力为40N,那](/uploads/image/z/5490717-69-7.jpg?t=1.%E4%B8%80%E6%A0%B91m%E9%95%BF%E7%9A%84%E8%BD%BB%E7%BB%B3%2C%E4%B8%80%E7%AB%AF%E5%9B%BA%E5%AE%9A%E4%BA%8E%E5%A2%99%E4%B8%8A%2C%E4%B8%80%E6%AE%B5%E7%94%A8%E6%89%8B%E6%8F%90%E5%9C%A8%E5%90%8C%E4%B8%80%E6%B0%B4%E5%B9%B3%E9%9D%A2%E4%B8%8A%2C%E7%8E%B0%E4%BA%8E%E7%BB%B3%E7%9A%84%E9%87%8D%E7%82%B9%E6%82%AC%E6%8C%8280N%E7%9A%84%E9%87%8D%E7%89%A9%2C%E6%B1%82%EF%BC%9A1%EF%BC%89%E8%83%BD%E5%90%A6%E5%9C%A8%E6%89%8B%E4%B8%AD%E4%BB%A550N%E7%9A%84%E5%8A%9B%E6%8F%90%E8%B5%B7%E9%87%8D%E7%89%A9%2C%E6%AD%A4%E6%97%B6%E7%BB%B3%E7%9A%84%E4%B8%A4%E7%AB%AF%E7%82%B9%E6%B0%B4%E5%B9%B3%E8%B7%9D%E7%A6%BB%E5%A4%9A%E5%A4%A7%3F2%29%E8%8B%A5%E7%BB%B3%E8%83%BD%E6%89%BF%E5%8F%97%E7%9A%84%E6%9C%80%E5%A4%A7%E5%8A%9B%E4%B8%BA40N%2C%E9%82%A3)
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