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�擦力与接触面积的大小无关但为什么轮胎越宽抓地力越大�？ 知乎 Template






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tomski�擦力与接触面积的大小无关但为什么轮胎越宽抓地力越大�？ 知乎 coloring
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擦力与接触面积的大小无关但为什么轮胎越宽抓地力越大？ 知乎 sketch template
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通过探究现擦力的大小与物体间接触面积的大小无关如图甲所示两个完全相同的的木块A和B叠放在水平桌面上在16N的水平拉力F1的作用下A sketch template
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