一重为2000N,边长为50厘米的正方形物体放在水平桌面上,某人想通过滑轮组来提起重物(动滑轮总重200牛,股数为5牛,不计绳重及摩擦)1.物体密度多大?2.人对绳子拉力为300牛时,物体对水平地面
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/06 23:30:15
![一重为2000N,边长为50厘米的正方形物体放在水平桌面上,某人想通过滑轮组来提起重物(动滑轮总重200牛,股数为5牛,不计绳重及摩擦)1.物体密度多大?2.人对绳子拉力为300牛时,物体对水平地面](/uploads/image/z/12091682-2-2.jpg?t=%E4%B8%80%E9%87%8D%E4%B8%BA2000N%2C%E8%BE%B9%E9%95%BF%E4%B8%BA50%E5%8E%98%E7%B1%B3%E7%9A%84%E6%AD%A3%E6%96%B9%E5%BD%A2%E7%89%A9%E4%BD%93%E6%94%BE%E5%9C%A8%E6%B0%B4%E5%B9%B3%E6%A1%8C%E9%9D%A2%E4%B8%8A%2C%E6%9F%90%E4%BA%BA%E6%83%B3%E9%80%9A%E8%BF%87%E6%BB%91%E8%BD%AE%E7%BB%84%E6%9D%A5%E6%8F%90%E8%B5%B7%E9%87%8D%E7%89%A9%EF%BC%88%E5%8A%A8%E6%BB%91%E8%BD%AE%E6%80%BB%E9%87%8D200%E7%89%9B%2C%E8%82%A1%E6%95%B0%E4%B8%BA5%E7%89%9B%2C%E4%B8%8D%E8%AE%A1%E7%BB%B3%E9%87%8D%E5%8F%8A%E6%91%A9%E6%93%A6%EF%BC%891.%E7%89%A9%E4%BD%93%E5%AF%86%E5%BA%A6%E5%A4%9A%E5%A4%A7%3F2.%E4%BA%BA%E5%AF%B9%E7%BB%B3%E5%AD%90%E6%8B%89%E5%8A%9B%E4%B8%BA300%E7%89%9B%E6%97%B6%2C%E7%89%A9%E4%BD%93%E5%AF%B9%E6%B0%B4%E5%B9%B3%E5%9C%B0%E9%9D%A2)
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