动滑轮中20N,重500N的人站在重100N的吊篮雷绕过滑轮的绳使吊篮匀速上升求:1 人拉绳的力多大 2人对吊篮的压力 友情提示:图我发了啊,怎么木有显示?
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![动滑轮中20N,重500N的人站在重100N的吊篮雷绕过滑轮的绳使吊篮匀速上升求:1 人拉绳的力多大 2人对吊篮的压力 友情提示:图我发了啊,怎么木有显示?](/uploads/image/z/1280772-36-2.jpg?t=%E5%8A%A8%E6%BB%91%E8%BD%AE%E4%B8%AD20N%2C%E9%87%8D500N%E7%9A%84%E4%BA%BA%E7%AB%99%E5%9C%A8%E9%87%8D100N%E7%9A%84%E5%90%8A%E7%AF%AE%E9%9B%B7%E7%BB%95%E8%BF%87%E6%BB%91%E8%BD%AE%E7%9A%84%E7%BB%B3%E4%BD%BF%E5%90%8A%E7%AF%AE%E5%8C%80%E9%80%9F%E4%B8%8A%E5%8D%87%E6%B1%82%EF%BC%9A1+%E4%BA%BA%E6%8B%89%E7%BB%B3%E7%9A%84%E5%8A%9B%E5%A4%9A%E5%A4%A7+2%E4%BA%BA%E5%AF%B9%E5%90%8A%E7%AF%AE%E7%9A%84%E5%8E%8B%E5%8A%9B+%E5%8F%8B%E6%83%85%E6%8F%90%E7%A4%BA%EF%BC%9A%E5%9B%BE%E6%88%91%E5%8F%91%E4%BA%86%E5%95%8A%EF%BC%8C%E6%80%8E%E4%B9%88%E6%9C%A8%E6%9C%89%E6%98%BE%E7%A4%BA%EF%BC%9F)
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