如图22所示装置 ,绳重及摩擦不计.装卸工人将重为800N的货物提至高处,人对绳的拉力F1为500N,货物在一分内匀速上升了五米求滑轮组的绕法请问为什么这样绕,本题也没有告诉滑轮的自重呀?
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![如图22所示装置 ,绳重及摩擦不计.装卸工人将重为800N的货物提至高处,人对绳的拉力F1为500N,货物在一分内匀速上升了五米求滑轮组的绕法请问为什么这样绕,本题也没有告诉滑轮的自重呀?](/uploads/image/z/5038336-64-6.jpg?t=%E5%A6%82%E5%9B%BE22%E6%89%80%E7%A4%BA%E8%A3%85%E7%BD%AE+%2C%E7%BB%B3%E9%87%8D%E5%8F%8A%E6%91%A9%E6%93%A6%E4%B8%8D%E8%AE%A1.%E8%A3%85%E5%8D%B8%E5%B7%A5%E4%BA%BA%E5%B0%86%E9%87%8D%E4%B8%BA800N%E7%9A%84%E8%B4%A7%E7%89%A9%E6%8F%90%E8%87%B3%E9%AB%98%E5%A4%84%2C%E4%BA%BA%E5%AF%B9%E7%BB%B3%E7%9A%84%E6%8B%89%E5%8A%9BF1%E4%B8%BA500N%2C%E8%B4%A7%E7%89%A9%E5%9C%A8%E4%B8%80%E5%88%86%E5%86%85%E5%8C%80%E9%80%9F%E4%B8%8A%E5%8D%87%E4%BA%86%E4%BA%94%E7%B1%B3%E6%B1%82%E6%BB%91%E8%BD%AE%E7%BB%84%E7%9A%84%E7%BB%95%E6%B3%95%E8%AF%B7%E9%97%AE%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%99%E6%A0%B7%E7%BB%95%2C%E6%9C%AC%E9%A2%98%E4%B9%9F%E6%B2%A1%E6%9C%89%E5%91%8A%E8%AF%89%E6%BB%91%E8%BD%AE%E7%9A%84%E8%87%AA%E9%87%8D%E5%91%80%3F)
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