Just on rotation? sounds like a bad case of nosewheel shimmy.
Flew upfront on one of our A330's back from Toronto, just as we began to rotate the a/c shook violently, with things looking like they were going to tear from their mounting.
The Captain looked at me and said, "Now when I say we have got a nose wheel shimmy will you believe me?"
err yes! was about the best I could muster.
Aircraft sometimes shake, the flightdeck will have felt it and reported it. They will have fobbed you off because they thought that it is all you need to know. How would you have reacted if the attendant came back and said "Yes there was a problem, we lost a wheel on departure, it's nothing to worry about!"
It's only As I See It