Hi.. I have a question about natural fvibration.(adsbygoogle = window.adsbygoogle || []).push({});

Every object has natural frequency and modes of vibration.

Let us consider a simple cantilever beam for our discussion.

and Lets say its first 4 modes of vibration are at 3, 6, 10 and 20 kHz respectively.

(I made up these frequency values)

Now, my question is.. if we pluck the cantilever and let it free vibrate by its own..

"Why will it ever vibrate at second or third modes?"

My feeling is that it always vibrates only at first mode.

Is it not right?

It can go to higher modes in forced vibration but I do not see any reason

why it goes for higher modes in a free vibration.

Please talk about this.

Thanks.

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# Modes of vibration, natural frequency

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