In the teaching of rigid body rotation,we first explain the moment of inertia of regular rigid body,and then guide students to deduce the moment of inertia of cuboid rigid body.Then we propose how to measure the moment of inertia of smart phones.We guide students to measure the moment of inertia of mobile phones by using gyroscope sensor and phyphox software of smart phones,and get good results.On the one hand,there is no need for complex and huge demonstration instruments.Teachers and students can directly operate and measure in class,and students can also make measurement and calculation as homework after class.On the other hand,this demonstration experiment integrates several knowledge points of rigid body motion,such as the calculation of moment of inertia of regular cuboid,the law of parallel axis and the rotation of rigid body. The above work provides a beneficial attempt for the integration of smart phones into college physics demonstration teaching.
关键词
大学物理/演示实验/智能手机/转动惯量
Key words
college physics/demonstration experiment/smart phone/moment of inertia
维普
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