一种用三线摆测量重力加速度的方法探讨DISCUSSION ON THE MEASUREMENT OF GRAVITATIONAL ACCELERATION BY THREE-LINE PENDULUM AND SMART PHONE
董科,高红,朱峰,罗观洲,李华
摘要(Abstract):
重力加速度的测量在大学物理实验教学中占有重要地位,它能加深学生对于运动和力的理解。本方法利用智能手机集传感器和处理器于一体的特点,开发了专门的滤波算法和手机应用,实现了数据输入,周期采集和数据处理一体化的功能。相比起原有的三线摆测量重力加速度或者物体转动惯量的实验,大大简化了实验步骤,降低了对于实验器材的要求,能够让学生直接抓住物理实验背后的物理本质。实验证明智能手机测量具有与传统毫秒计时器方法相同的精度,实验条件的改变并不会显著影响智能手机的测量结果。
关键词(KeyWords): 重力加速度;三线摆;智能手机
基金项目(Foundation): 基础研究培育计划(YWF-15-WLXY-020);; 北京航空航天大学本科生教改项目;; 北航精品课程项目
作者(Author): 董科,高红,朱峰,罗观洲,李华
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