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本刊及其它刊物都刊登了“滑动摩擦系数的测量”一文,提供了一例既简单又实用的实验装置,可以对滑动摩擦系数进行测量,但是由于该文忽略不计定滑轮的作用,且只是提到要选取尺寸较小的定滑轮,没有定量给出定滑轮在多大程度上对滑动摩擦系数μ_k的测量值有影响。本文将从理论分析入手,给出忽略不计定滑轮作用的条件,给出减少误差的方法。
This publication and other publications have published the article “Measurement of Sliding Friction Coefficient”, which provides an example of a simple and practical experimental device that can measure the coefficient of sliding friction, but this article ignores the role of the pulley, and only mentions To select a fixed pulley with a smaller size, there is no quantitative determination of the extent to which the fixed pulley has an influence on the measurement of the sliding friction coefficient μ_k. This article will start from the theoretical analysis, give the condition that ignores the pulley action, and give the method to reduce the error.