Research on the Deviations of Measurement of Liquid Viscocity Coefficient by Falling-Ball Method

The determination of liquid viscosity coefficient is an important verification experiment in the physics experiment of the university.The reason of its operation will greatly affect the accuracy of the experiment.In this paper, the main factors that cause the error of viscous coefficient during the operation are discussed and analyzed through the measurement, calculation and comparison of the experimental data.The experimental instrument and the experimental operating method are improved for these factors so as to achieve the objectiveof reducing the experimental errors.