2725| 5
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【求助】能將重力勢(shì)能轉(zhuǎn)化為動(dòng)能的裝置 |
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點(diǎn)評(píng)
水輪機(jī)可以,,是什么東西的重力勢(shì)能和什么東西的動(dòng)能,?
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點(diǎn)評(píng)
估計(jì)只能某樣?xùn)|西的重力勢(shì)能轉(zhuǎn)化為自身的動(dòng)能,,然后再把動(dòng)能傳遞給小車了,就是撞擊,,或是重物通過(guò)繩輪拽引小車運(yùn)動(dòng)
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