一道初三的物理题目,哪为高手可以教教小弟啊?用卷扬机将一重物匀速提升一定高度,用输出功率是P1的卷扬机,需时间t1完成,而用输出功率为P2的卷扬机时需时间t2完成,若用输出功率为P1+P2的卷
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![一道初三的物理题目,哪为高手可以教教小弟啊?用卷扬机将一重物匀速提升一定高度,用输出功率是P1的卷扬机,需时间t1完成,而用输出功率为P2的卷扬机时需时间t2完成,若用输出功率为P1+P2的卷](/uploads/image/z/5275149-69-9.jpg?t=%E4%B8%80%E9%81%93%E5%88%9D%E4%B8%89%E7%9A%84%E7%89%A9%E7%90%86%E9%A2%98%E7%9B%AE%2C%E5%93%AA%E4%B8%BA%E9%AB%98%E6%89%8B%E5%8F%AF%E4%BB%A5%E6%95%99%E6%95%99%E5%B0%8F%E5%BC%9F%E5%95%8A%3F%E7%94%A8%E5%8D%B7%E6%89%AC%E6%9C%BA%E5%B0%86%E4%B8%80%E9%87%8D%E7%89%A9%E5%8C%80%E9%80%9F%E6%8F%90%E5%8D%87%E4%B8%80%E5%AE%9A%E9%AB%98%E5%BA%A6%2C%E7%94%A8%E8%BE%93%E5%87%BA%E5%8A%9F%E7%8E%87%E6%98%AFP1%E7%9A%84%E5%8D%B7%E6%89%AC%E6%9C%BA%2C%E9%9C%80%E6%97%B6%E9%97%B4t1%E5%AE%8C%E6%88%90%2C%E8%80%8C%E7%94%A8%E8%BE%93%E5%87%BA%E5%8A%9F%E7%8E%87%E4%B8%BAP2%E7%9A%84%E5%8D%B7%E6%89%AC%E6%9C%BA%E6%97%B6%E9%9C%80%E6%97%B6%E9%97%B4t2%E5%AE%8C%E6%88%90%2C%E8%8B%A5%E7%94%A8%E8%BE%93%E5%87%BA%E5%8A%9F%E7%8E%87%E4%B8%BAP1%2BP2%E7%9A%84%E5%8D%B7)
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