如图所示,要提升一个边长0.2m,密度为4×10³kg/m³的立方体金属块A,当把它浸没在水中时,体重为600N的人用滑轮组提起它时对地面的压力为350N,(1)滑轮组的机械效率?(写出解题思路)(2
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 04:43:54
![如图所示,要提升一个边长0.2m,密度为4×10³kg/m³的立方体金属块A,当把它浸没在水中时,体重为600N的人用滑轮组提起它时对地面的压力为350N,(1)滑轮组的机械效率?(写出解题思路)(2](/uploads/image/z/2022431-23-1.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E8%A6%81%E6%8F%90%E5%8D%87%E4%B8%80%E4%B8%AA%E8%BE%B9%E9%95%BF0.2m%2C%E5%AF%86%E5%BA%A6%E4%B8%BA4%C3%9710%26%23179%3Bkg%2Fm%26%23179%3B%E7%9A%84%E7%AB%8B%E6%96%B9%E4%BD%93%E9%87%91%E5%B1%9E%E5%9D%97A%2C%E5%BD%93%E6%8A%8A%E5%AE%83%E6%B5%B8%E6%B2%A1%E5%9C%A8%E6%B0%B4%E4%B8%AD%E6%97%B6%2C%E4%BD%93%E9%87%8D%E4%B8%BA600N%E7%9A%84%E4%BA%BA%E7%94%A8%E6%BB%91%E8%BD%AE%E7%BB%84%E6%8F%90%E8%B5%B7%E5%AE%83%E6%97%B6%E5%AF%B9%E5%9C%B0%E9%9D%A2%E7%9A%84%E5%8E%8B%E5%8A%9B%E4%B8%BA350N%2C%EF%BC%881%EF%BC%89%E6%BB%91%E8%BD%AE%E7%BB%84%E7%9A%84%E6%9C%BA%E6%A2%B0%E6%95%88%E7%8E%87%3F%EF%BC%88%E5%86%99%E5%87%BA%E8%A7%A3%E9%A2%98%E6%80%9D%E8%B7%AF%EF%BC%89%EF%BC%882)
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