(Solved): As is known, a Flettner ship is propelled by the so called Magnus effect. Our ship (see sketch) is ...

As is known, a Flettner ship is propelled by the so called Magnus effect. Our ship (see sketch) is driven
by 2 rotating cylinders and should move forward as fast as possible in the direction indicated by the
arrow. From which direction should the wind blow against the counterclo ckwise rotating cylinders to
achieve the fastest speed? Place 1 cross on the arrow indicating the optimal wind direction.