动量线,英文全名Momentum,简称MOM。“动量”这一名词,市场上的解释相当广泛。以Momentum命名的指标,种类更是繁多。综合而言,
在旋转运动中的角动量产生的方式与平移运动中的线动量的产生是基本相似的。
In motions of rotation angular momentum appears in much the same way as linear momentum appears in motion of translation.
换句话说,因为没有竖直方向的合力,所以线动量的竖直方向仍为零。
In other words, the vertical component of its linear momentum remains zero, since there is no resultant vertical force.
线动量与角动量原理。
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