Discussion
A dynamic magnification factor less than unity means the dynamic response is
Answer: C
Correct answer: smaller than the static response to the same peak force
The magnification factor is the ratio of dynamic to static response, so a value below one means the dynamic response is the smaller.
It is entirely possible and it is what happens at high frequency ratios: when the forcing is much faster than the structure can respond, the mass cannot follow and the amplitude falls away. That is precisely the regime vibration isolation works in, above a frequency ratio of \( \sqrt{2} \), where the transmitted force is less than the applied one.
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