受迫振动、共振现象在生产生活中经常会见到 ,在中学物理教学中也有不少用来演示该现象的装置 ,这里介绍一种现象明显 ,能演示受迫振动、共振动态过程的装置 ,以帮助学生深刻理解共振曲线 .一、实验器材中华牌两挡调速电唱机一台 ,普通鸿运扇一台 ,带图 1定滑轮的自制木架一个 Forced vibration and resonance phenomena are often seen in production and life. There are also many devices used to demonstrate this phenomenon in physics teaching in middle schools. Here is a device that demonstrates phenomena that can demonstrate forced vibration and resonance dynamic processes. Help students to deeply understand the resonance curve. First, the experimental equipment Zhonghua brand two-speed speed record player one, ordinary lucky fan one, with a Figure 1 fixed pulley homemade wooden one