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1问题的提出以跨过定滑轮的轻绳作为连接物且运动过程中绳子方向发生偏转的连接体问题,常出现在中学物理习题类的参考资料中,~[1-3]用来考查速度分解和机械能守恒定律.一些题目的条件和解析中没有注意到绳子两端物体的加速度大小是不等的,因此出现了科学性错误.现举例说明.试题:如图1所示,一轻绳通过无摩擦的定滑轮O与在倾角为30°的光滑斜面上的质量为m1的
Problem 1 The problem of the connecting body that the light rope crosses the fixed pulley as the connecting object and the direction of the rope is deflected during the movement is often found in the reference materials of the high school physics exercises category. Decomposition and the law of conservation of mechanical energy.Some topics of the conditions and analysis did not notice the acceleration of the object at both ends of the rope is not the size of the size, so there have been scientific errors .Examples .Examples: As shown in Figure 1, a light rope Through the frictionless fixed pulley O and the inclination of 30 ° on the smooth slope of the quality of m1