Hello, I want to ask a question about natural frequency of a simple,
undamped spring-mass system under forced vibration.
As textbooks tell us, when the forcing frequency is matched with the natural
frquency of the system, vibration resonance is achieved and as a result the
vibration amplitude is amplified to an infinitively large value.
My questions are:
1. In resonance cases, where does the large vibrating energy come from ?
2. In non-resonance cases, the vibration amplitudes are relatively smaller.
Where does the vibration energy go?
Textbooks illustrate these phenomena quite clearly through equations. But I
want to know more on the physical side. Does anyone here give physical