用一条最大可承受拉力300N的绳子,从深为120m的矿井中提拉质量为10kg的重物,要使重物到达井口时速度恰好为零,求:(1)重物上升的最大加速度(2)重物运动的最大时间
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/29 18:06:16
![用一条最大可承受拉力300N的绳子,从深为120m的矿井中提拉质量为10kg的重物,要使重物到达井口时速度恰好为零,求:(1)重物上升的最大加速度(2)重物运动的最大时间](/uploads/image/z/6770459-11-9.jpg?t=%E7%94%A8%E4%B8%80%E6%9D%A1%E6%9C%80%E5%A4%A7%E5%8F%AF%E6%89%BF%E5%8F%97%E6%8B%89%E5%8A%9B300N%E7%9A%84%E7%BB%B3%E5%AD%90%2C%E4%BB%8E%E6%B7%B1%E4%B8%BA120m%E7%9A%84%E7%9F%BF%E4%BA%95%E4%B8%AD%E6%8F%90%E6%8B%89%E8%B4%A8%E9%87%8F%E4%B8%BA10kg%E7%9A%84%E9%87%8D%E7%89%A9%2C%E8%A6%81%E4%BD%BF%E9%87%8D%E7%89%A9%E5%88%B0%E8%BE%BE%E4%BA%95%E5%8F%A3%E6%97%B6%E9%80%9F%E5%BA%A6%E6%81%B0%E5%A5%BD%E4%B8%BA%E9%9B%B6%2C%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%89%E9%87%8D%E7%89%A9%E4%B8%8A%E5%8D%87%E7%9A%84%E6%9C%80%E5%A4%A7%E5%8A%A0%E9%80%9F%E5%BA%A6%EF%BC%882%EF%BC%89%E9%87%8D%E7%89%A9%E8%BF%90%E5%8A%A8%E7%9A%84%E6%9C%80%E5%A4%A7%E6%97%B6%E9%97%B4)
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