There is gravity in the sky and gravity right

False, in the relationship between man and the earth, man is subjected to the gravitational force from the earth, assuming that a person is on the equator, he is also affected by the centripetal force that is directed towards the center of the earth's sphere, but because the centripetal force and the gravitational force are forces of different natures, the gravitational force received by man on the earth can be decomposed into gravity and centripetal force, and at high altitude, because he is still affected by the centripetal force, the powerful parallelogram rule shows that gravity is not equal to gravitational force.

When a person is at the South Pole or North Pole, they are not subjected to the centripetal force, so the gravitational force is equal to the gravitational force.

I support this explanation: "False, in the relationship between man and the earth, man is subjected to the gravitational force from the earth, suppose a person is on the equator, he is also affected by the centripetal force directed towards the center of the earth's sphere, but since the centripetal force and gravitational force are forces of different nature, the gravitational force experienced by man on the earth can be decomposed into gravity and centripetal force, and at high altitude, because he is still affected by the centripetal force, the powerful parallelogram rule shows that gravity is not equal to gravitational force."

When a person is at the South Pole or North Pole, they are not subjected to the centripetal force, so the gravitational force is equal to the gravitational force.

The gravitational force at high altitude is the resultant force of the centripetal force and gravity, but it can be ignored at altitudes of 36,000 km or more.

Gravity on the near-Earth surface = gravitational force - centripetal force, but since the centripetal force is calculated so small that it can be ignored, the gravitational force near the surface is basically equal to the gravitational force, but there is no centripetal force at the poles, so the gravitational force at the two poles is equal to the centripetal force.

No, only at the poles, gravitational force = gravity.

Elsewhere gravity is the component of gravitational force.

How tall? Weightlessness in space orbit with a gravity of 0

Near the surface of the earth gravitational force = centripetal force + gravity.

Range. Only on the surface of the earth waits.

Different. Gravity is a component of gravitational force. The other component of force is the centripetal force.

The definition of gravity in secondary school physics textbooks is the force exerted on an object due to the attraction of the earth. But in fact, this is only a qualitative description, pointing out that gravity is caused by the action of gravity, not its exact definition.

Difference Between Gravitation and Gravity

The definition of gravity in secondary school physics textbooks is the force exerted on an object due to the attraction of the earth. But in fact, this is only a qualitative description, pointing out that gravity is caused by the action of gravity, not its exact definition.

The textbook gives a method for calculating gravity: it is the product of the mass of the mass of the mass and the gravitational acceleration g at the corresponding position. Whereas, gravitational acceleration is a vector quantity, and its direction is always vertically downward, so the direction of gravity is always vertically downward.

However, the magnitude and direction of gravitational acceleration g vary with location, and there is no way to know the gravitational acceleration at a point on the ground in advance. This makes gravity seem impossible to theoretically **, but must be field-studied.

After learning the balance of forces, gravity can be obtained by the balance of forces. For example, for a stationary object suspended by a soft string, the pulling force of the rope and the gravity of the object are a pair of balancing forces, which is how spring scales work.

Based on this, we can solve the problem of which direction the "vertical direction" is, that is, the direction of the rope in front of you where the plumb is suspended.

When the object is on the equator, because the centripetal force experienced by the object at this time is 0 at the angle between the equatorial plane, the gravitational force is equal to the gravitational force.

The law of universal gravitation, a law of interaction between objects, was discovered by Newton in 1687. Any object has a mutual attraction to each other, and the magnitude of this force is directly proportional to the mass of the individual objects and inversely proportional to the square of the distance between them.

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. The direction of gravity is always straight downwards. The amount of gravitational force experienced by an object is directly proportional to the mass of the object.

What is the gravitational force equal to gravity, this sentence is strictly speaking, you should be saying that the gravitational force of the earth on the object on the earth is equal to the gravitational force of the object under what circumstances, the gravitational force of the earth on the object and the gravitational force of the object on the earth are a pair of interaction forces, and the schematic diagram of their forces is equal in magnitude and opposite in direction. Having said that, what we know is that the earth is not a circle, relatively speaking, an ellipse, so when we study macroscopically, we put it on the center of the sphere, and what connects us is the radius of the earth, when we are at the equator, the transverse cutting plane is the equatorial plane, when we are in the Tropic of Cancer, the transverse cutting plane is the Tropic of Cancer cutting plane, obviously, the equatorial plane is larger than the Tropic of Capricorn plane, so the centripetal force of our circular motion is different, in the equator our gravitational force is the centripetal force and gravity, But on the Tropic of Cancer plane, we need to be analyzed by force, gravity is perpendicular to the contact plane, that is, your section at that point in the Tropic of Cancer, and our gravitational force is the direction of man and the center of the sphere, so after the force analysis, it is found that gravity can be decomposed into centripetal force and gravity, then the triangle rule, gravitational force is greater than or equal to gravity. At the poles, there is no need for a centripetal force, so the gravitational force is equal to the gravitational force.

The reason why gravity is equal to gravitational force at the poles.

The equatorial object rotates with the earth, and the force should be gravitational and supportive, the two forces are not equal, and the resultant force of the two forces is equal to the centripetal force required by the object to rotate with the earth. The supporting force on the object is the opposite of the gravitational force. The centripetal force required by the object at the poles of the earth to rotate with the earth is zero, so the gravitational force is equal to the supporting force.

Since the gravitational pull of the earth on the surface objects is the same, it can be seen from the fact that the gravitational force at the equator is greater than the supporting force to the poles, and the supporting force becomes larger, that is, the gravitational force increases, that is, g increases with the increase of latitude.

Gravity is not equal to the gravitational pull of the Earth on an object. Due to the rotation of the earth itself, in addition to the poles, the objects in other places on the ground are moving in an approximate uniform circle around the earth's axis, which requires a centripetal force that is perpendicular to the earth's axis, and this centripetal force can only be provided by the earth's gravitational force on the object, and we can decompose the earth's gravitational force on the object into two components, one component f1, which is directed towards the earth's axis, and the magnitude is equal to the centripetal force required for the object to move in an approximate uniform circular motion around the earth's axis; The other component, g, is the gravitational force on the object. where f1 = mrw 2 (w is the angular velocity of the earth's rotation and r is the radius of rotation of the object), it can be seen that the magnitude of f1 is zero at the poles, increases with the decrease of latitude, and is the maximum f1max in the equatorial region.

Because the centripetal force of the object is very small, in general, it can be approximated that the gravitational force of the object is equal to the gravitational force, that is, the influence of the rotation of the earth can be omitted in general. where the gravitational component of gravity provides gravitational acceleration and the centripetal component of gravity provides centripetal acceleration that maintains rotation with the earth.

Analysis: 1The essence of gravity is a component of gravity, which is approximately equal to gravitational force on or near the ground, and because the gravity calculation formula is simpler than the gravitational formula, gravity approximation is often used to replace gravitational force.

2.In the case that the earth does not rotate, the gravitational force is equal to the gravitational force.

3.In the case of autobiography, in the geographical South Pole or North Pole, gravitational force is equal to gravity.

At the time of the axis of rotation (i.e., the north and south poles), the gravitational force is equal to the gravitational force. At the equator, the gravitational force minus the centripetal force is equal to the gravitational force, and elsewhere the sine or cosine value is calculated by the angle of deviation from the equator. However, since the centripetal force is very small, if there is no special emphasis in the question, then on the surface of the earth, the gravitational force is equal to the gravitational force.

Blind guess that the landlord is studying high school physics compulsory two).

Gravitational force equals gravity and requires the object to be at rest. The gravitational force exerted on an object at rest at the poles of the Earth is equal to gravity.

If it is not at the poles, then the object will move in a uniform circular motion along the axis of rotation, and the gravitational force will move in a circular centripetal force, so the gravitational force will be slightly less than the gravitational force.

When an object is within the gravitational force of a planet, if the acceleration of the object's rotation on the surface of the planet is small, the gravitational pull of the planet on it is negligible, which is equal to his gravitational force on the planet.

At the poles of the earth, the centripetal force is zero, and the gravitational force of the earth on the object is equal to the gravitational force, and the gravitational force and centripetal force coincide at the equator, so it can be seen that the gravitational force is greater than the gravitational force.

There is no gravitational force that is completely equal to gravity.

Only on an object with a large enough mass and an object with a very small relative mass will its gravity infinitely close to equal to the gravitational force, that is, the gravitational force is infinitely close to equal to the gravitational force between the two.

Because of the existing universe, there are so many objects whose gravitational pull interacts and influences.

At the north and south poles of the Earth, the object does not move in a circular motion with the rotation of the Earth, and the gravitational force of the object is equal to the gravitational force.

Only at the geographical north and south poles, the angular velocity of the object is zero, and its centripetal force is naturally zero, and the gravitational force at this time is equal to the gravitational force.

At the poles, gravity is equal to gravitational force.

For an object in the air, the gravitational force is equal to the gravitational force.

At the poles, gravitational force is equal to gravity.

Hello, it should be at the equator, there is no partial force, there are partial forces at the poles.

When you're at the North and South Poles.

When standing at the north and south poles, gravitational force is equal to gravity.

At the North and South Poles, gravitational force equals gravity.

1. Objects near the earth are subject to gravity due to the attraction of the earth, but the gravitational force on the object is generally not equal to the gravitational force of the earth on the object.

2. The gravitational pull of the earth on an object produces two effects:

1 is to make the object participate in the rotation of the earth along with the earth;

2. It is to make the object fall to the ground (or press on the ground), that is, it can be decomposed into two forces, and the centripetal force and gravity required to maintain the uniform circular motion of the object with the rotation of the earth, the magnitude of gravity is generally not equal to the gravitational force f, and the direction is generally not pointed to the center of the earth, only the gravitational direction at the poles and the equator points to the center of the earth, and the radius of the circular motion of the object with the rotation of the earth at different latitudes is different, and the required centripetal force f direction also changes, and the magnitude of the gravitational force on the object also changes. That is, the acceleration of gravity near the ground should vary with latitude.

1. When the centripetal force of the rotation of the North and South pole objects around the earth is zero, the gravitational force is equal to the gravitational force of 10,000 picos. 2. When a heavy object is moving in the geosynchronous orbit of the earth, the gravitational force is equal to the centripetal force. Gravity is caused by the gravitational pull of the earth on objects burning and rolling near the ground.

However, it should be noted that because the earth is rotating, the gravitational force of any object on the earth is not equal to the gravitational force, except at the north and south pole points.

In conventional cognition, the centripetal force of rotation around the earth is much less than gravity, so it is generally believed that gravity is slightly equal to gravitational force, in fact, gravity is slightly less than gravitational force, and only when the centripetal force of the rotation of the North and South pole objects around the earth is zero, gravity is equal to gravitational force. The direction of gravity and gravitation is different, gravity is vertically downward, gravitational force is directed towards the center of the earth, and vertically downward and pointing towards the center of the earth are different and should not be confused.

The three cases in which gravitational force is equal to gravitational force are:1. When the centripetal force of the rotation of the North and South pole objects around the earth is zero, the gravitational force is equal to the gravitational force.

2. When a heavy object is moving in the geosynchronous orbit of the earth, the gravitational force is equal to the centripetal force. Gravity is caused by the gravitational pull of the earth on objects near the ground.

3. When the object is at high altitude, the rotation of the earth is not considered, and the object does not move in a circle around the earth, so gravitational force is equal to gravity.

The principle that gravitational force is equal to gravity:An object on the surface of the Earth, when it is at the two poles of the Earth (the South Pole or the North Pole), bends back, and there is no rotation at the poles due to the rotation of the Earth around the Earth's axis. Therefore, when the orange line objects on the earth are at the poles of the earth, the gravitational force of the object is equal to the gravitational force of the object.

The gravitational force of a satellite moving in a uniform circular motion around the earth in space provides the centripetal force for the satellite to move in a circle.