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关于匀速圆周运动向心加速度a_n的物理意义,以及是a_n还是角速度ω才是描述“速度方向变化快慢”的物理量,多年来一直是中学物理教学刊物的热门话题,时不时就会有讨论文章出现.如本刊2011年第2期就有2篇,分别是《对向心加速度物理意义的探讨》(以下称汤文),《角速度能表示速度方向变化快慢吗?》(以下称龚文).其实这二文都是因本刊2010年第3期上的《向心加速
The physical meaning of centripetal acceleration a_n for a constant circular motion, and whether a_n or angular velocity ω are physical quantities that describe how fast the velocity direction changes, has been a hot topic for secondary school physics teaching publications for many years and there are discussion articles from time to time Such as the second issue in 2011 there are 2, respectively, “on the physical meaning of centripetal acceleration of the discussion” (hereinafter referred to as Tang Wen), “angular velocity can indicate the speed of the direction of change?” (Hereinafter referred to as Gong Wen In fact, these two articles are due to the magazine in 2010 on the 3rd "to speed up