Is the vortex of the water outlet because of Cechi?

Author:Institute of Physics of the Ch Time:2022.08.25

When Xiaobian was isolated in the hotel, he hung his clothes on the fire spraying head. As a result, the glass tube was broken and the water sprinkled a room.

When cleaning the water in the room, the curious editor found that after the water in the pool is about to be released, a vortex will always be formed, and it always seems to always be counterclockwise.

The editor thought of the geography of high school geography, which refers to the force that the earth's surface movement is perpendicular to the direction of the motion. On the left of the movement direction, it seems that the phenomenon of counterclockwise can be well explained.

But when I went home, I saw a few pools but found that there were also clockwise, and asked friends to verify. The friends listened to the decision to analyze it.

Although in junior high school, when we just talked about the concept of "inertia", we often chewed words, called the inherent attributes of it as an object, and cannot be expressed as "the role of inertia." However, as we know the deepening, when we want to study dynamic issues from the perspective of static, the principle of Dalangbeel has appeared, and the virtual inertial force is introduced. The form of power balance, the deep meaning is that the words and two words cannot be generalized.

We can briefly divided into two types: flat inertia and rotating inertia. Among them, the first type is very common and simple. When you take a car, you will feel the push back of the seat, and the brakes will lean forward. This kind of inertial force direction is the opposite of the flat speed.

Rotating inertia is slightly more complicated, which can be further subdivided into inertial centrifugal force and Korioli. We can often feel inertia centrifugal force, and it will feel throwing out of the outer circle when turning in the car. When looking at an object of a uniform circular motion at the inertia system, we know that we must strongly provide centripetal force to meet the motion of the object. From the perspective of the reference department of the object itself, it is still, so the inertial centrifugal force is used to balance the centripetal force in its own reference system, and the direction is always "centrifugal".

The second Korioli power of rotating inertia is slightly more complicated. He is produced because the object is relative exercise in the rotation reference system. There is no Kooreli. Specific derivation can be used to use the relative movement relationship between the movement system and the fixed system. Here

Its size and direction are determined by the angle vector of the reference system of the relative motion speed vector fork multiplying the reference system. It should be explained that he comes from two parts. On the other hand, the additional acceleration generated by the movement point caused by the rotation point and the relative speed caused by the current implication point of the rotation system and the current implication point. The geography we learned in high school geography is a force of Korioli in the direction of the surface of the earth.

The next step is to analyze how big the acceleration of the Ke's acceleration in the water in the pool. It is 24 hours a week to the earth.

And we know that the speed of water flow must be less than 1m/s, so the acceleration of the Cessi is actually the only

This value is almost neglected compared to the gravity acceleration, so it is difficult to say that the vortex of the counterclockwise is caused by the rotation of the earth. The winter and winter are also caused by the initial disturbance of the water in the pool. Due to the rotation of slight disturbances, as the original rotation is closer to the water outlet, the rotating radius becomes smaller and smaller, and the rotation speed is getting faster and faster under the condition of concept of angular movement.

Although the problem of the water split vortex is not the Kelai we imagined, it is often more powerful in other fields such as the river channel, such as the other side. Among them, it played.

In addition, swing on the earth will also be affected by the rotation of the earth. As long as there is a certain angle between the direction of the direction of the plane and the angle speed of the earth rotation, the surface will be affected by Korio Milks, which will generate a torque opposite to the earth's rotation direction, so that the surface surface rotates.

In 1851, French physicist Fu Ke predicted the existence of this phenomenon and proved this phenomenon with experiments. A pointer is inlaid to hang this huge single lecture on the church dome. The experiment confirmed that the surface of the northern hemisphere will slowly rotate to the right (Fuke rotates with the earth). Because Frank first proposed and completed the experiment, the experiment was named the Franki experiment.