You pass V1, start to rotate and nothing happens. What do you then?
Good question, but as a professional there should be an answer.
Jammed control drill, failure to rotate drill. Some aircraft - pull harder, announce the condition, both pilots pull, split the controls if the automatic systems has not done so (improbable second failure).
When was this last practiced in the sim; were the forces involved surprisingly high - something which you would not normally consider.
Alternatively, before such situations are encountered, consider:- cg verified, trim setting, when and how the before-takeoff-control check is done; a snowy day, what deicing procedures were used, hold over time.
Its easy to quote the negative, more difficult to think about the positive.
Anyway what happened on those two occasions; accidents avoided because of a long runway. What was the issue which contributed to the situation.
What was learnt, what might we learn.
https://fs.blog/2021/01/practice-failure/
If we don’t practice failing, we can only safely fly on sunny days.