Physics Physics Gravity everywhere on Earth wants to be in the same direction, right? Solve

This is not true. The direction of gravitational acceleration is different at different places on the earth, this direction is approximately directed to the center of the earth, and the radius direction is different at different locations, so the direction of gravity is different.

Wrong. What is the direction of gravity? Straight down. What is straight down? That is, towards a central point of the earth. If we look at the earth as a circle, and the center of the circle is the point where it is facing, is the direction of gravity the same everywhere?

No, the force is a vector, and from the direction point of view, it is all pointing to the center of the circle, so the direction is different.

The size is about the same, but if anything, it's not all the same.

You want to believe me! This statement is 100% true! Gravity is the central point of the earth downward....

Wrong. Because gravity is created due to the attraction of the earth and is directed towards the center of the earth.

Well, of course, the direction is different.

Of course it's not right, China's gravity is downward, and the U.S. is downward, but these two "downwards" are in different directions.

Yes, the direction of gravity is the same, but the gravitational force is different, and the gravitational force also includes a centripetal force.

No, even if gravity is pointing at the center of the earth, it is not the same direction. Moreover, there is an angle between gravity and gravitational force that is not in the same direction and does not point to the center of the earth (with the exception of the poles and the equator). This is because the earth has a rotation, the gravitational force has to provide the centripetal force, and the rest is the gravitational force.

And the centripetal force is different at different latitudes.

Right. The different directions are gravitational force, which is divided into centripetal force and gravity.

Yes, the direction of gravity is different, and gravity is divided into centripetal force and gravity.

Obviously no, you can find two points on the globe and the north and south dimensions, and you can analyze them.

Gravitational force contains two component forces, one is gravity and the other is centripetal force.

The direction of gravity is straight down, and the direction of centripetal force is directed towards the earth's axis.

To put it simply, we all know that the earth is constantly moving, and the objects on the earth have to rotate synchronously with the earth, and rotation requires force, and centripetal force is such a force.

The mutual attraction between objects due to mass is called gravitational attraction, and if the earth is round, then the gravitational attraction of the earth to the object is directed towards the center of the earth.

If you draw a circle and point to the gravitational force of the center of the earth on a point A on the upper right side of the circle, then the gravitational force at point A has two effects because the object has to move in a circular motion (i.e., rotate with the earth), one is the force that is horizontally to the left (i.e., the centripetal force), and the other is the force that is pointed by A to the right of the center of the circle (i.e., gravity), and we define the direction of gravity to go straight down, so the direction of vertical downward direction does not point to the center of the earth.

At the North Pole, the centripetal force at the South Pole (assuming the Earth's axis is vertical) is zero, and gravity and gravitational force are in the same direction, so the vertical downward direction is directed towards the center of the Earth.

So the vertical downward direction does not necessarily point to the center of the earth.

The concept of gravity, magnitude, direction, center of gravity, the four interactions in nature, the classification of forces.

Gravity is a component of gravity, and gravity points to the center of the circle, so gravity must not point to the center of the circle.

This is proposed taking into account the rotation of the Earth.

Gravitational force is the resultant force of gravity and centripetal force.

The gravitational force points to the center of the earth. Whereas, centripetal forces are not usually directed towards the center of the earth (except for the equator and the poles). So gravity is also not usually directed at the center of the earth.

1. If the rotation of the earth is considered, the difference between gravitational force and the gravitational force on an object.

When discussing the change of gravity on objects on the earth in the mechanics part of the high school textbook, first **gravity** According to the law of gravitation, it can be seen that the gravitational force of an object with mass m on the surface of the earth is f gmm r2, where m represents the mass of the earth Since the earth is constantly rotating, all objects on the earth move in a uniform circle around the earth's axis with the rotation of the earth, which requires centripetal force, the direction of this centripetal force is perpendicular to the earth's axis, and its magnitude is f mr 2 where r is the distance of the object from the earth's axis, is the angular velocity of the earth's rotation This centripetal force can only come from the gravitational force f of the earth on the object, which is a component of the gravitational force f, and the other component of the gravitational force f is the gravitational force mg experienced by the object Therefore, the gravitational force mg is a component of the gravitational force f experienced by the object m.

Because the earth is rotating, the combined force of gravity and the centripetal force when you rotate with the earth is the gravitational force of the earth to you, except for the north and south poles (the autobiographical velocity is 0), the gravity of other places is not exactly equal to the gravitational force, and the direction is not exactly the same, so gravity does not necessarily point to the center of the earth.

The Earth is an ellipsoid.

Gravitational force exists between any two objects. Its expression is f=(m1*m2)*g r

where r is the distance between two objects and g is a constant.

Therefore, objects on the ground are also subject to gravitational attraction, and the direction of the force is connected to the center of the earth.

Since the Earth is an ellipsoid, every point on the surface is around the circumference of the circle in which it is located. The radius of the poles is zero, and the radius of the equator is the largest.

Since the earth rotates from west to east, the object also rotates with the earth. The object experiences a centripetal force. The direction of the centripetal force points to the center of the circle around which the object (particle) is located.

What about gravity? As long as you do the orthogonal decomposition of the force, you will find that the gravitational force is the resultant force of the centripetal force of the object and the gravitational force subjected to it.

That is, gravity is a right-angled hypotenuse, and gravity is a right-angled side.

It is only when the object is at the equator that the object's gravity is directed towards the center of the earth. That is, the centripetal force, the gravitational force and the gravitational force "coincide".

Perhaps, you haven't learned yet. Will learn later!

Answer: Because the objects around the earth are subject to the gravitational pull of the earth (pointing to the center of the earth's sphere), since the rotation of the earth drives the object to rotate, and the object rotates in a circular motion, one component of the gravitational force provides the centripetal force, so the other component is gravity.

The direction of gravity is vertically downward, which is the direction of gravity, and only the direction of gravity of objects on the equator and objects at the poles vertically downwards coincides with the center of the sphere.

Yes, the direction of gravity is always directed towards the center of the earth.

This can be seen from the definition of gravity. The force exerted on an object due to the attraction of the earth is called gravity。The object of gravity is the center of the earth, so the direction of gravity is always straight downwards, pointing towards the center of the earth.

No matter where a person or object is on the earth, at what height, whether it is placed on the ground or on a hillside, the direction of gravity on which he (or it) is subjected will always be straight downwards, pointing towards the center of the earth.

The direction of gravity is straight down but not towards the center of the earth, mainly because of the rotation of the earth, and gravity is a component of the gravitational force of the earth f 10,000. The direction of f million is always directed towards the center of the sphere, and f million can be decomposed into two forces, one gravity g and the other centripetal force f that provides the object to rotate with the earth (the rotation of the earth). Visible:

Gravity is directed towards the center of the sphere only at the ends of the axis of rotation and at the equator.

At the poles and the equator, it is directed towards the center of the earth, and the other positions are vertically downward, because gravity provides the centripetal force and gravity generated by the rotation of the earth, that is, the combined force of gravity and rotation is gravitational force, and the gravitational force is directed to the center of the earth, but the centripetal force is directed to the axis of rotation, so his component gravity is not completely directed to the center of the earth (the centripetal force of the north and south poles = 0, the centripetal force of the equator and the gravitational force coincide, and these two places are especially pointed to the center of the earth).

No, gravity is a component of gravity. Only at the equator and poles point to the center of the earth, other locations are biased.

Gravity is perpendicular to the surface.

The gravity of the same object at different latitudes of the earth is not the same.

The same object placed at the equatorial position of the Earth has the least gravity. The gravitational force experienced at the equator is minimal. Because of the rotation of the earth, centrifugal force will be generated, which requires a part of the gravitational force (of course, a very small part) to counteract, and the centrifugal force at the equator is the largest, because the radius of its circular motion is the largest, and the centrifugal force and the gravitational force are just in a straight line, and there is no loss of force, so the objects in the equatorial mountains are subjected to the smallest gravitational force, and the poles are subjected to the largest gravitational force, because there is no centrifugal force.

The force exerted on an object due to the attraction of the earth is called gravityThe object of gravity is the center of the earth. The direction of gravity is always straight downwards.

The gravitational force experienced by the object is proportional to the mass of the object, and the calculation formula is: g=mg, g is the proportionality factor, the gravitational force is about, and the gravitational force changes with the change of latitude, indicating that the gravitational force of an object with a mass of 1kg is. The point at which gravity acts on an object is called the center of gravity.

The gravitational force of the same object is not the same at different latitudes of the earth, and the gravitational force is provided by one component of gravitational force, and the other component provides the centripetal force of the object and the earth moving in a circular motion. The higher the latitude, the less centripetal force is required, so the more parts are divided into gravity, so as the latitude gets higher, the gravity also increases, and the maximum value of gravity appears at the poles.