191问答库 > 动滑轮省一半的力是什么意思

动滑轮省一半的力是什么意思

动滑轮省一半力的话，那两个动滑轮就省全部的力是吗
2025-03-17 07:22:17
推荐回答（2个）
回答1：

动滑轮省力一半是因为杠杆原理，动力臂是阻力臂的两倍哦。斜着拉也许就省不了两倍的力了。最多省两倍的力，而且滑轮省力不是简单的相加，应该是数绳子的股数。
———————————————————————————————————凤起东路精锐张老师

回答2：

不是 要看动滑轮上绳子的段数

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