滑轮组匀速提起重1000N的物体,10s内物体上移4m,已知做的额外功是1000J,若绳重和摩擦不计,试求:(...滑轮组匀速提起重1000N的物体,10s内物体上移4m,已知做的额外功是1000J,若绳重和摩擦不计,试
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![滑轮组匀速提起重1000N的物体,10s内物体上移4m,已知做的额外功是1000J,若绳重和摩擦不计,试求:(...滑轮组匀速提起重1000N的物体,10s内物体上移4m,已知做的额外功是1000J,若绳重和摩擦不计,试](/uploads/image/z/3558959-71-9.jpg?t=%E6%BB%91%E8%BD%AE%E7%BB%84%E5%8C%80%E9%80%9F%E6%8F%90%E8%B5%B7%E9%87%8D1000N%E7%9A%84%E7%89%A9%E4%BD%93%2C10s%E5%86%85%E7%89%A9%E4%BD%93%E4%B8%8A%E7%A7%BB4m%2C%E5%B7%B2%E7%9F%A5%E5%81%9A%E7%9A%84%E9%A2%9D%E5%A4%96%E5%8A%9F%E6%98%AF1000J%2C%E8%8B%A5%E7%BB%B3%E9%87%8D%E5%92%8C%E6%91%A9%E6%93%A6%E4%B8%8D%E8%AE%A1%2C%E8%AF%95%E6%B1%82%EF%BC%9A%EF%BC%88...%E6%BB%91%E8%BD%AE%E7%BB%84%E5%8C%80%E9%80%9F%E6%8F%90%E8%B5%B7%E9%87%8D1000N%E7%9A%84%E7%89%A9%E4%BD%93%2C10s%E5%86%85%E7%89%A9%E4%BD%93%E4%B8%8A%E7%A7%BB4m%2C%E5%B7%B2%E7%9F%A5%E5%81%9A%E7%9A%84%E9%A2%9D%E5%A4%96%E5%8A%9F%E6%98%AF1000J%2C%E8%8B%A5%E7%BB%B3%E9%87%8D%E5%92%8C%E6%91%A9%E6%93%A6%E4%B8%8D%E8%AE%A1%2C%E8%AF%95)
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