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1.10牛.因為彈簧測力計測的是彈簧受到的力,而彈簧只受一隻手給的力 2.5牛.因為力的作用是相互的,一隻手用力即使另一邊不用力也會被動用力.就好像如果你用右手拽左手,如果左手不動,即使左手不用力也會感到用力一樣,不然左手就被拽走了.
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