摘 要:重力加速度是物理学中的一个十分重要的物理量，在地面上不同的地区，重力加速度g不相同，它是由物体所在地区的纬度、海拔等因素决定，随着地球纬度和海拔高度的变化而变化，准确地确定它的量值，无论从理论上、还是科研上、生产上以及军事上都有极其重大的意义。本文通过实验室所能提供的仪器,设计了自由落体仪测量法、单摆法、三线摆法，三种方法来测重力加速度,通过实验数据处理、误差分析、最终结果及与本地的理论值等方面进行分析比较与研究，给出目前我们实验室测量重力加速度的最佳方法，以达到既简便又准确地测量本地重力加速度之目的。经过对以上几种方法在不同条件下试验所得的结果分析比较，每种方法中都有接近本地重力加速度的实际值，但在不同条件下都会存在很大的误差,相比较而言单摆法在几种方法中即较简便又准确。
关键词：重力加速度；自由落体；单摆；三线摆
ABSTRACT:Gravity acceleration of physics is a very important parameters, on the ground of different regions, gravity acceleration, it is not the same g by object region factors such as the latitude and altitude decision, as the earth's latitude and altitude changes, accurately determine its value, whether from the theory, or scientific research, manufacturing and military have very important significance. This article through laboratory can provide the instruments, designed a free fallers instrument measurement method, the pendulum method, three-wire places a law, three kinds of methods to test gravity acceleration, according to experimental data processing, error analysis, finally the results and the theoretical with local aspects, carries on the analysis comparison and research are currently our laboratory and the best way to measure gravity acceleration to easyand accurately measuring the local gravity acceleration purposes. Based on the above several methods in different conditions acquired from the experiment results, each method are close to the actual value of the local gravity acceleration, but in different conditions will exist great error, compared several methods of simple pendulum method in a simple and accurate that.
Keywords: Gravity acceleration; Free fallers; Single pendulum; Third-line pendulum
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