物体做受迫振动时,振动稳定后的频率等于驱动力的频率,跟物体的固有频率没有关系。但是当驱动力的频率接近物体的固有频率时,受迫振动的振幅增大,当驱动力的频率等于振动物体的固有频率时,振动物体的振幅最大。这种现象叫做共振。高中物理课本(全日制普通高级中学教科书·试验 When the object is forced to vibrate, the frequency after the vibration is stable is equal to the frequency of the driving force, which is not related to the natural frequency of the object. However, when the frequency of the driving force is close to the natural frequency of the object, the amplitude of the forced vibration increases, and when the frequency of the driving force is equal to the natural frequency of the vibrating object, the amplitude of the vibrating object is the largest. This phenomenon is called resonance. High school physics textbook (full-time normal high school textbooks test