EPISODE · Jan 26, 2018 · 4 MIN
你的体重是多少？体重是weight，还是mass？
from 英语小小孩 · host 英语小小孩
当问你的体重是多少时，这个重量说的是weight还是mass呢？weight和mass看上去都在说关于重量，实际上两者的意思并不相同。一个物体的mass是不变的，无论在地球还是月球，mass的单位是克、千克等等。weight是指物体承受的吸引力大小，在地球上的weight就是地球对它的吸引力，在月球上就是指月球对它的吸引力，所以同一个物体在地球上和在月球上的mass相同，但weight不同。weight的单位是牛顿。
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你的体重是多少？体重是weight，还是mass？
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