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  4. A lightly damped oscillator with a frequency (ω) is set in motion by harmonic driving force of frequency (n). When n < ω, then response of the oscillator is controlled by

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Q. A lightly damped oscillator with a frequency ($\omega$) is set in motion by harmonic driving force of frequency $(n)$. When $n < \omega$, then response of the oscillator is controlled by

AIIMSAIIMS 1996Oscillations

Solution:

Given: Frequency of damped oscillator $=\omega ;$ Frequency of harmonic driving force $=n$ and $n< \omega .$
We know that if $n<\omega$, then vibrations are nearly in phase with the impressed force or the response of the oscillator is controlled by spring constant.