The direction of gravity, what is the direction of gravity

1. No, because the earth is not a standard sphere, it does not point to the center of the sphere, but vertically downward, that is, perpendicular to the surface of the earth, gravity is directed towards the center of the earth, gravity is not, and the centripetal force points to the axis of the earth.

2. No, if it is all used as a centripetal force, then the object on the equator will be completely weightless and float like a space station. But it's not. An object at the equator has the greatest centripetal force and the least gravitational force, and the centripetal force is a component of the gravitational force.

3. Yes, there is no circular motion at the pole and no centripetal force is required, so gravity is gravity, and gravity is the largest at the pole.

1 Yes. 2 No, the component force is centripetal force and gravity.

3 Yes, there is no circular motion, there is no centripetal force, to say that there is also relative to the sun.

1 No, it is not. Straight down.

2 Yes, gravitational force = centripetal force at the equator. Gravity is zero.

3 At the poles, the object does not move in a circular motion, there is no centripetal force, and the gravitational force is gravity.

4 Not at the poles, and in the case of the equator: the gravitational force decomposes into gravity and centripetal force. ok?

1.Yes, the direction of gravity is always straight downward, and the centripetal force is directed towards the center of the earth.

2.Without other influences, gravity = centripetal force pointing towards the center of the earth vertically downwards is equivalent here.

3.Can the centripetal force = gravity direction point towards the center of the earth.

The direction of gravity cannot be said to be directed towards the center of the earth. Pointing towards the center of the sphere is the gravitational pull of the Earth on the object. Gravity is only one component of gravity, and the other component is the self-turning centricity of an object on Earth.

It is more appropriate to say that the direction of gravity is "straight down", because it has the effect of preventing objects from leaving the earth's surface. There is also a saying that "perpendicular to the horizontal side facing downward".

In addition, it is only at the north and south poles that the gravitational force is in the same direction as gravity, because there the self-turning centricity force is zero.

1 Yes. 2 It can be said that the centripetal force is completely provided and the gravitational force is completely provided, and both are the same.

3 Yes, the reason is the same as 2.

The direction of gravity is vertically downward, and the force experienced by the object due to the attraction of the earth is called gravity, and the force applied by gravity to the object is the earth. The magnitude of gravity can be measured with a dynamometer, stationary or moving in a straight line at a constant speed.

The magnitude of the pulling force or pressure of the object on the dynamometer is equal to the magnitude of the gravitational force.

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 magnitude is about, the gravitational force changes with the change of latitude, and 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 on an object is due to the attraction of the earth to the object, but strictly speaking, gravity is not the gravitational force of the earth, because of the rotational motion of the earth itself, except for the poles, the objects in other places on the ground are moving in a uniform circular motion around the earth's axis with the earth, which requires a centripetal force directed perpendicular to the earth's axis, and this centripetal force can only be provided by the gravitational force of the earth on the object. We can decompose the gravitational force f exerted by the earth on an object with mass m into two components: one component f, The direction is directed to the earth's axis, and the magnitude is equal to the centripetal force of the object moving in a uniform circular motion around the earth's axis; The other component w is the gravitational force on the object: f f w can also be written.

w＝f＋f′

f -f is the inertial centrifugal force introduced when the rotating earth is used as a reference frame How much difference is the gravity w from the earth's gravitational force f in magnitude and direction? We can make a rough estimate According to the relationship between forces, we can know (the formula is more complicated, too lazy to type, think about it yourself!) Using the magnitude of gravity w instead of the magnitude f of gravity, the relative error is the largest, but haha, from here we can know that in fact, the centripetal force required for the rotation of the earth is very small compared to the gravitational force of the earth).

sin max=

72 ( is the angle between gravity and the Earth's gravity).

The maximum 6 is to replace f with w, and the deviation of direction does not exceed 6

So, in a rough calculation, gravity can be used instead of gravity, and the direction of the earth's gravity is directed towards the center of the earth, so we can roughly say that the direction of gravity is towards the center of the earth.

Now we know what it means to go straight down, which means pointing to the center of the earth

<>1. The direction of the horizontal plane. Gravity refers to the attraction of objects with mass to each other and is also the weight of the object.

2. Gravity is not equal to the gravitational pull of the earth on an object. Due to the rotation of the earth itself, except for the poles, the objects in other places on the ground are all together with the earth, around the earth's axis to do a close and similar circular motion balance, which requires a centripetal force directed perpendicular to the earth's axis, and this centripetal force can only be provided by the gravitational force of the earth on the object. The purification of an object is governed by gravity.

The direction line of gravity is called the plumb line—the baseline line. It is the baseline of the surveying work, and the magnitude of the elevation must be measured in the direction of the plumb line, and the direction of the projection of the Gaussian plane coordinates must also be in the direction of the plumb line.

To determine whether an object is perpendicular to the ground, you can use the plumb line method, that is, a line plus a weight. This weight is called a plumb weight, and the plumb is subjected to gravity, that is, a component of the gravitational force, so that the line is perpendicular to the ground at an angle of 90 degrees. The weight of the weight of the weight has nothing to do with the perpendicularity of the vertical line, for example, the verticality of the vertical line formed by a 1 kg weight and a 10 kg weight weight is the same as that of a 10 kg weight, which is 90 degrees.

Also, in general, the relativistic effect is not considered, and when there is a heavy object on the side of the plumb weight, it will not affect the verticality, such as the plumb line at the foot of the mountain, and the plumb is next to a mountain, and it has no effect on the verticality.