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1什么是“关联速度”问题所谓“关联速度”就是2个通过某种方式联系起来的速度.比如一根绳两端的速度通过绳发生联系.如图1所示,人通过跨过光滑定滑轮的轻绳拖动重物,人向右匀速运动,当绳与水平方向的夹角为θ角时,物块上升的速度是多少.2“关联速度”教学现状不少教师是按照运动的合成与分解的思想教学的.人的运动是合运动,将该运动按照其效果分解为
1 What is “speed of association” Problem The so-called “speed of association” is the speed at which two are linked in some way, such as the speed of a rope being linked by a rope. As shown in Figure 1, Light slippery fixed pulley light rope to drag heavy objects, people move to the right, when the angle between the rope and the horizontal direction is θ, the block is rising speed is how much .2 “related speed ” a lot of teaching status quo Teachers teach in accordance with the idea of synthesis and decomposition of movement.Human’s movement is combined movement, the movement according to its effect is decomposed into