物理题,机械效率题目:工人师傅用一个滑轮组在40s内将重600N的木箱从地面匀速吊上4m高的阳台,所用的拉力为250N,不计绳的重和摩擦力.求:(3)滑轮组的机械效率.注:为了让大家更好的解答
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/13 04:07:57
![物理题,机械效率题目:工人师傅用一个滑轮组在40s内将重600N的木箱从地面匀速吊上4m高的阳台,所用的拉力为250N,不计绳的重和摩擦力.求:(3)滑轮组的机械效率.注:为了让大家更好的解答](/uploads/image/z/2175327-63-7.jpg?t=%E7%89%A9%E7%90%86%E9%A2%98%2C%E6%9C%BA%E6%A2%B0%E6%95%88%E7%8E%87%E9%A2%98%E7%9B%AE%EF%BC%9A%E5%B7%A5%E4%BA%BA%E5%B8%88%E5%82%85%E7%94%A8%E4%B8%80%E4%B8%AA%E6%BB%91%E8%BD%AE%E7%BB%84%E5%9C%A840s%E5%86%85%E5%B0%86%E9%87%8D600N%E7%9A%84%E6%9C%A8%E7%AE%B1%E4%BB%8E%E5%9C%B0%E9%9D%A2%E5%8C%80%E9%80%9F%E5%90%8A%E4%B8%8A4m%E9%AB%98%E7%9A%84%E9%98%B3%E5%8F%B0%2C%E6%89%80%E7%94%A8%E7%9A%84%E6%8B%89%E5%8A%9B%E4%B8%BA250N%2C%E4%B8%8D%E8%AE%A1%E7%BB%B3%E7%9A%84%E9%87%8D%E5%92%8C%E6%91%A9%E6%93%A6%E5%8A%9B.%E6%B1%82%EF%BC%9A%EF%BC%883%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.%E6%B3%A8%EF%BC%9A%E4%B8%BA%E4%BA%86%E8%AE%A9%E5%A4%A7%E5%AE%B6%E6%9B%B4%E5%A5%BD%E7%9A%84%E8%A7%A3%E7%AD%94)
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