
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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