The earth has a geostrophic deflection force, why does an object thrown upwards fall into the hand?

That's because there is also a gravitational attraction to the object, and the combined effect of gravity and spin centrifugation is the gravitational force of the object.

The object is too small, and the geostrophic deflection force is ignored. If it is an impact on the aircraft.

Geostrophic deflection force refers to a force that deflects all objects on the earth that move horizontally due to the rotation of the earth, and is a component of gravitational force. The gravitational force is broken down into gravity and the force that sustains its rotation. It's just that the angle is very small, and gravity is dominant, so it's still downward.

Geostrophic deflection force, also known as Coriolis force, is a force acting on a moving object due to the rotation of the Earth. It has an effect on the object that is thrown upwards.

Because you don't throw high enough, the effect is already very weak, so it will fall back, and if you throw the ball for a few hours it will not fall in place.

The first, second, and third floors did not turn the deflection force explicitly. A few upstairs are right.

The erosion of the side bank of the river is the effect of the geostrophic deflection force.

When discussing the motion of certain objects, the geostrophic deflection force is negligible because it is much smaller than the others, but it is a very important force when discussing the movement of air over a large area and must be taken into account.

Because man is on the earth, you already give the object a horizontal velocity when you throw it, but you also move in a circle with the earth!

So its landing point is still your throwing point!

Do you have a second year of junior high school? Understanding inertia is easy to explain, when you throw an object. Since inertia is moving in a straight line in the same direction as the earth's rotation, it does not change its direction relative to us.

It's like if we jump on top of a speeding train and fall to where we are. And the car won't run away from under our feet!

Categories: Science & Engineering.

Problem description: I want to know the reason for the force, and I am in trouble.

Analysis: Let's post it again:

The geostrophic deflection force is also called coriolis force, which is usually translated as coriolis force in Chinese. I think it can be explained in this way. Suppose the Earth's center is stationary (which is simpler, much more complicated if you also consider the Earth's revolution, but the Earth's revolution has little effect on the Coriolis Force, at least not on the phenomena we often see).

Because all the points on the earth move in a circle around the earth's axis. Here we will assume that the earth's axis is invariant, that is, the earth's axis is always along one direction, and then assume that the earth's motion angle or blocking speed is constant, that is, the earth will not rotate faster and then slower, coupled with the assumption just now (the center of the earth is stationary), now the earth is abstracted into a sphere that rotates at a uniform speed around a straight line through the center of the sphere. Then now every point on the sphere moves in a uniform circular motion around the earth's axis, and the radius of motion is the perpendicular line of the earth's axis from that point, and the distance from the intersection point of the perpendicular line and the earth's axis to the point is the radius of motion.

Now it is clear that the rate of movement of each point on the surface is different with different latitudes (because of the different radius), but the angular velocity of movement at each point on the surface is the same. Then when an object moves from low to high latitudes (e.g. from the equator to the North Pole, which corresponds to the situation in the Northern Hemisphere), the linear velocity of the object becomes smaller and smaller. However, objects have inertia, and the object has a tendency to maintain its linear velocity, that is to say, if you observe the front of the object in a place where it is stationary relative to the surface (the reference frame of reference at rest relative to the surface), you will find that it always has a tendency to move eastward in the process of moving northward (because the earth turns from west to east, the equator moves eastward at the highest rate, and the north and south poles are the smallest).

However, according to Newton's laws of motion, there must be an external force to change the state or tendency of motion of an object. This means that the object moving from south to north in the Northern Hemisphere receives an eastward force. This force is called the Coriolis force.

To put it more technically, the Coriolis force is not what I usually call the force of an object with force, it is an equivalent force in a non-inertial frame of reference. In other words, this thing can actually be said to be a force field.

If you imagine that if the observer sits on this moving object, then when moving from north to south, there is a force to the west, so turning right, and when moving from south to north, the force to the east is also turning right, and see, it is biased. In the Southern Hemisphere, on the contrary, all east-east is deflected to the left together. This is manifested in the fact that tornadoes in the northern and southern hemispheres rotate in opposite directions, and the vortex created by the flow of water flushing toilets is also in opposite directions.

The horizontal geostrophic deflection force, also known as the geodeflection force, is a force generated by the rotation of the earth with the earth's graticule as the reference frame. Geostrophic deflection is a component of the Coriolis force (Coriolis force) in the direction along the Earth's surface. It is the third type of inertial force that is often introduced, the first two are translational inertial force and inertial centrifugal force, which are introduced when the object has velocity relative to the reference frame of the uniform circumference.

Causes. The reason is briefly described as follows: in order to maintain horizontal inertial motion of an object, the graticule generates relative acceleration due to the rotation of the earth.

The following is the popular explanation of the geostrophic deflection force given by "Calculation Ruliu", the first thing to explain is that the geostrophic deflection force is to the right in the northern hemisphere, and to the left in the southern hemisphere, of course, these right and left are relative to the forward direction, and the following is the situation in the northern hemisphere.

1.Since the angular velocity of each latitude is the same, when flying from north to south, the circle of the south is large, so the linear velocity is large, so a small linear velocity in the north is slower than the linear velocity of the south, so it deviates to the right due to inertia. It's the same with going north, from a fast place to a slow place, the speed is 'ahead', and the direction of progress is also deviated to the right.

2.Fly along the latitude to the east and west, at this time, because the direction of gravity points to the center of the earth, and the direction of the latitude circle points to the center of the circle is not the center of the earth, you can think about it, so because of this angle, the centripetal force can not completely cancel out the centrifugal force that you rotate around the center of the circle of the parallel, so a synthesis, it will also deviate to the right.

3.The equator is not subject to geostrophic deflection precisely because the center of the earth is exactly the center of the circle in which the latitudinal circle rotates, and the two coincide, and gravity can cancel out the outward force. Finally, the geostrophic deflection force is greatest at the north and south poles.

On the other hand, the northern hemisphere is biased to the right, and the southern hemisphere is biased to the left.

Geostrophic deflection is caused by the inertia of a moving object. Suppose that an object moves from a low latitude to the North Pole, and at the same time, due to the rotation of the Earth, it also moves from west to east at the same time. This is the knowledge of motion synthesis in middle school, and it is very clear to draw a diagram.

The same applies to the southern hemisphere.

Also, the left and right bias is for the direction of the object's movement, not to say that you want to face up the southern hemisphere.

Downstairs, as I said, the geostrophic bias is an inertial effect.

As for the question of the nature of the inertial force, it is not a natural force in the strict sense of the word, because it does not have a body to exert the force, it is only a property of the object to remain in its original state. So, if the object is originally in motion, it has the inertia to maintain the speed and direction of its original motion, and if the object is originally stationary, it has the inertia to remain at rest.

In daily life, if the moving object is not free, the influence of inertial force can be ignored, because there are factors such as friction, resistance, and even human control to counteract, but it cannot be said that there is no such bias effect; If the object is relatively free, such as flowing water, ocean current, etc., the influence of inertial force will be more obvious. Looks like you've got to make up for your middle school physics.

If it is the other way around, it should be the northern hemisphere to the right and the southern hemisphere to the left.

A more easy-to-understand explanation: in the Northern Hemisphere, because the angular velocity of all latitudes is the same, when moving from north to south, the south side of the latitude coil is large and the linear speed of rotation is large, so the object moving from the north to the south, the linear velocity of the rotation with the earth is slower, and due to inertia, it deviates to the right. It's the same with going north, from a fast place to a slow place, the speed is 'ahead', and the direction of progress is also deviated to the right.

The same is true in the southern hemisphere, but in the opposite direction.

It seems that what you say makes sense, but it is actually wrong. Due to the deflection force generated by the rotation of the earth, it is not biased towards objects on the earth.

Reason: The velocity of the object on Earth is the same as the position where the object is located, and the object does not change position without the action of an external force. It's like you sleep, sleep all night, or lie in the same position.

You can also put a lighter ball in one place and see if it's still in its original position after a few days.

The force and geostrophic deflection generated by the rotation of the earth with the earth's graticule as a reference are a component of the Coriolis force (Coriolis force) along the earth's surface, and the graticule accelerates with the rotation of the earth in order to maintain the horizontal inertial motion of the pole.

The earth's own energy pushes the earth to rotate, and because of the kinetic energy generated by the earth's rotation, the objects on it have kinetic energy, and Ren Kuansen Tonghe objects have the inertia of the spring barrier that holds the original state of motion, so there will be a tendency to deviate from the earth.

It doesn't seem to be on topic, sorry.

The geostrophic deflection force is essentially a Coriolis force, and the following is the introductory transcript of the encyclopedia:

The Coriolis force comes from the inertia of the motion of the object, and the particle point that moves in a linear line in the rotating system, due to the effect of inertia, has a tendency to continue to move along the original direction of motion, but because the system itself is rotating, after a period of motion, the position of the particle in the system will change, and the direction of its original motion trend, if the leak is observed from the perspective of the rotating system, it will deviate to a certain extent.

As shown in the figure on the right, when a particle moves in a straight line relative to an inertial frame, its trajectory is a curve relative to the rotating system. Based on the rotational system, we believe that there is a hole in the decay force that drives the trajectory of the particle to form a curve, and this force is the Coriolis force.

According to the theory of Newtonian mechanics, the tendency of the linear motion of the particle to deviate from the original direction is attributed to the action of an applied force, which is the Coriolis force, using the rotating system as a frame of reference. From the point of view of physics, the Coriolis force, like the centrifugal force, is not a real force, but the embodiment of inertial action in a non-inertial frame.

The formula for calculating the Coriolis force is as follows:

f=-2mv×ω

where f is the Coriolis force; m is the mass of the particle; v is the velocity of the particle; is the angular velocity of the rotating system; Represents the outer product symbol of the two vectors.

In short, it is perpendicular to the direction of velocity and angular velocity.

Notice the fork multiplication in the Coriolis force above? That is to say, the direction of this force is only perpendicular to the speed of motion and the direction of the angular velocity of rotation, regardless of east, west, north, south, and direction, which is very similar to the direction in a magnetic field.

A: Subject to the rotation of the earth.

The effect of the object moving horizontally on the surface of the earth has the phenomenon of deflection in the direction of its motion, so it does not conform to the topic

b. Objects moving horizontally on the earth are subjected to geostrophic deflection forces.

Impact: Northern hemisphere to the right, southern hemisphere.

It is biased to the left, and it is not biased on the equator, so it does not conform to the topic

c. Under the influence of the rotation of the earth, the object moving horizontally on the surface of the earth has the phenomenon of deflection in the direction of its motion, and the northern hemisphere deflects to the right of its direction of motion; The Southern Hemisphere is deflected to the left in the direction of its motion; An object moving along the equator is correct because the direction of its motion is not deflected

d. Horizontally moving objects on the earth are affected by geostrophic deflection forces: the northern hemisphere is biased to the right, the southern hemisphere is biased to the left, and the equator is not biased, so it does not conform to the topic

Therefore, c