How to play Frisbee?

The way to play Frisbee is to throw it out and fly it back, which is more suitable for one person to play.

Frisbee is a kind of frisbee that can fly back after being thrown out, which is more suitable for one person to play. The reason why the frisbee can fly back is mainly based on Bernoulli's principle, which provides it with a horizontal component during the flight, so that it can fly back. However, if you want to fly the frisbee back, you should pay attention to the method, throw it obliquely at an angle of more than 45 degrees, and control the force exerted when throwing the frisbee.

When the frisbee is thrown obliquely upward while rotating, the air velocity at the bottom of the frisbee is low and the air velocity at the top of the frisbee is high, so the pressure at the bottom is greater than the pressure at the top, so there is a pressure difference perpendicular to the frisbee surface, while the frisbee is inclined and the ring is horizontal. So this pressure difference has a component in the horizontal direction, which is backward, that is, in the direction of people who are still there. With this horizontal component, the frisbee can fly back.

Mechanical causes of disc rotation:

From the mechanical point of view, when throwing a frisbee, the strong rotation provides enough angular momentum for the frisbee to keep a relatively fixed flying posture, and the appropriate hand angle enables the lift to push the frisbee to rise to a certain height, but the air resistance is opposite to the gravity of the earth and the movement direction of the frisbee, and the frisbee gradually slows down and the air resistance gradually decreases.

At the farthest point, the air resistance in the horizontal direction is zero. At this time, only the angular momentum and the gravity of the earth are doing work, and the movement provides the component of the return direction while overcoming the angular momentum, so the frisbee begins to fly back. The whole return journey is a process of resisting gravity component and horizontal air resistance.