Yacht Car 1 (Tailwind)

Let's take a look!

Watch the video on YouTube.

What kind of experiment is this?

Experimental procedure and explanation:

• Here we study the relationship between wind direction and the force acting on a sail that has been installed on a car.
• Under a tailwind, you should make the sail perpendicular to the wind, with the sail tip pointing backward to the windward direction.
• The sail will catch the wind and the car will move leeward. In this case, the force acting on the sail is in the leeward direction; this force is air resistance. A force acting in the direction of a flow stream is called drag.

[Keywords]	Drag
[Related items]	Yacht Car 2, Yacht Car 3
[Reference]	“The Wonders of Flow,” Japan Society of Mechanical Engineering, Kodansha Blue Backs pp. 162–167.