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本文对“刚体定轴转动定律不宜写为矢量形式“这种看法提出了商榷。”从理论上证明把刚体定轴转动定律写为矢量形式是正确的,并分析了具体例子。 《大学物理》1988年第5期发表了《普通物理学教材中刚体定轴转功定律不宜写为矢量形式》一文(以下简称《转动定律》),该文认为不宜将刚体定轴转动的动量矩定律写成M=d(1w)/dt=dL/dt的形式,与《大学物理力学教学研究》一书中的观点相似。也许出于同样考虑,目前有的教材也只给出转动定律的数量形式。笔者认为,只要正确理解力矩和动量矩等物理概念,就不会出现《转动定律》一文中的误解。
This paper puts forward a discussion on the opinion that “the law of rotation of rigid body fixed axis should not be written in vector form”. “It is theoretically proved that it is correct to write the law of rotation of a rigid-body fixed-axis as a vector form and analyze concrete examples.University Physics published the fifth issue of 1988 that” the rigid-body fixed-axis power law in normal physics textbooks should not be written As a vector form “(hereinafter referred to as” the law of rotation “), the article considers it unfit to write the law of momentum moment of rigid-body fixed-axis as M = d (1w) / dt = dL / dt, Perhaps the same argument, the current textbook only gives the number of the law of rotation.The author believes that as long as the correct understanding of the physical concepts such as moment and moment of momentum, there will be no ”law of rotation" A misunderstanding in the article.