Question 4
In a fictional nuclear-plant transport puzzle, a 50-ton flask moves 6 metres on rollers of circumference 0.5 metre. A roller leaving the rear is placed at the front. How many full rolling turns correspond to moving the flask 6 metres? Use ideal no-slip rolling against both the stationary ground and the flask; count rolling while in contact, not repositioning in the air. This is a mathematical model, not an industrial procedure.
