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定滑轮实验

适用年级 1-6 年级

key word:Digital inquiry experiment system

key word:

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原理 

使用滑轮时,轴的位置固定不动的滑轮称为定滑轮。其实质上是动力臂等于阻力臂的杠杆。定滑轮不省力,但是可以改变力的方向。

 

目的

了解定滑轮的作用。

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