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摩擦力

适用年级 1-6 年级

key word:Digital inquiry experiment system

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原理 

两个相互接触并挤压的物体,当它们发生相对运动或具有相对运动趋势时,就会在接触面上产生阻碍相对运动或相对运动趋势的力,这种力叫做摩擦力。

 

目的

了解摩擦力的存在。

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