摘要
利用ESP32自制力传感器,将装有绕线轮的电动机固定在力传感器上,匀速提升物体时可直接测量拉力,借助亚克力板上的刻度线记录重物与自由端移动的距离.分别改变物重、动滑轮重、摩擦情况和滑轮组的绕线方式,探究了提升滑轮组机械效率的方式.该实验能够充分发挥课程的实践性,提高学生分析问题和解决问题的能力,促进学生深度学习,有效培养学生的学科核心素养.
The electric motor with a winding wheel was fixed on the self-made force sensor,and the force could be directly measured when lifting the object at a constant speed.The distance between the weight and the free end was measured by using the scale line on the acrylic plate.The way to improve the mechanical efficiency of the pulley block was explored by changing the weight of the object,the weight of the movable pulley,the friction situation and the winding mode of the pulley block.This experiment fully utilized the practicality of the course,enhanced students’ability to analyze and solve problems,promoted deep learning,and effectively cultivated students’core competencies in the subject.
作者
陈剑峰
CHEN Jianfeng(Putian No.2 Middle School,Putian 351131,China)
出处
《物理实验》
2023年第9期60-63,共4页
Physics Experimentation
关键词
滑轮组
机械效率
数字化
匀速直线运动
pulley block
mechanical efficiency
digitalization
uniform linear motion
