一个简单的，低成本的，数据记录摆从一个电脑鼠标建成
A simple, low-cost, data-logging pendulum built from a computer mouse
摘要：
从高中到本科，涉及钟摆的课程和家庭作业问题通常是物理入门课和实验室课程的重要组成部分。虽然用于摆实验的实验室设备在市场上有售，但往往价格昂贵，靠固定预算的教师可能负担不起，特别是在发展中国家。我们提出了一种低成本，易于建立的旋转传感器摆使用现有的硬件在球型计算机鼠标。我们演示了如何使用该装置来测量一个简单的物理摆的频率和阻尼系数。这种易于构造的实验室设备使所有学生都可以亲身体验最重要的简单物理系统之一。
英文摘要：
Lessons and homework problems involving a pendulum are often a big part of introductory physics classes and laboratory courses from high school to undergraduate levels. Although laboratory equipment for pendulum experiments is commercially available, it is often expensive and may not be affordable for teachers on fixed budgets, particularly in developing countries. We present a low-cost, easy-to-build rotary sensor pendulum using the existing hardware in a ball-type computer mouse. We demonstrate how this apparatus may be used to measure both the frequency and coefficient of damping of a simple physical pendulum. This easily constructed laboratory equipment makes it possible for all students to have hands-on experience with one of the most important simple physical systems.
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