Speed of Bar on Roller table after cutting

[Kaustubh]

If rolling mill is running at 10 meters per second and roller table is running at 20 meters per second.
Before cutting of bar, it will move at 10 meters per second.
After cutting bar has to move with the speed of 20 meters per second on roller table.
How much time bar will take to reach to that speed?

 

[sophiecentaur]

It depends on the friction, surely. If it were a 'rack and pinion' / rigid connection, it would jam.