Do all the people on Earth point in the direction of gravity towards the center of the earth?

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.

Gravity does not necessarily point to the center of the earth, because the direction of gravity is always straight downward, so it is only pointed at the poles or the equator.

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, objects in other places on the ground move in an approximately uniform circle around the earth's axis along with the earth.

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.

Other things to know about gravity

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, objects in other places on the ground move in an approximate uniform circle around the earth's axis with the earth, which requires a centripetal force directed vertically to the earth's axis.

This centripetal force can only be provided by the gravitational pull of the earth on the object, and we can decompose the gravitational force of the earth on the object into two components, one component f1, which is directed towards the earth's axis, and the magnitude is equal to what is needed for the object to move in an approximately uniform circle around the earth's axis. Centripetal force; The other component, g, is the gravitational force on the object.

The direction of gravity is always straight downwards and not necessarily towards the center of the earth (only at the equator and the poles point to the center of the earth). The gravitational force points to the center of the earth. Gravity is only one component of gravity

In general, it is possible to approximate that the gravitational force of an object is equal to the gravitational force, i.e., the effect of the rotation of the earth can be omitted in general.

Gravity is not equal to the gravitational pull of the Earth on objects. Due to the rotation of the earth itself, except for the poles, objects in other places on the ground are moving in an approximate uniform circle around the earth's axis along with the earth, which requires a centripetal force directed vertically to the earth's axis, which can only be provided by the gravitational force of the earth on the object.

We can decompose the gravitational force of the earth on the object into two branches, 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 approximately uniform circular motion around the earth's axis; The other component, g, is the gravitational force on the object.

Gravity and gravitational force are in different directions, gravity is vertically downward, gravitational force is directed towards the center of the earth, and vertical downward and pointing towards the center of the earth is different. Because the Earth rotates, the gravity of an object at any point on the Earth is not equal to gravitational force, except at the North and South Pole points. At this point, it can be seen as the centripetal force and gravity around the Earth to form a gravitational force (vector sum – parallelogram rule).

Since the centripetal force of rotation around the earth is much less than gravity, 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.

Gravity does not necessarily point to the center of the earth. The direction of gravity is always straight downward, and only at the poles or equator does it point to the center of the earth. The gravitational force exerted on an object is proportional to the mass of the object, and the formula is:

g = mg, g is the scale factor, the magnitude is approximately, the gravity changes with the magnitude 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 force exerted on an object due to the attraction of the earth is called gravity. The direction is always straight downwards and does not necessarily point to the center of the earth (only the equator and the Zhihong poles point to the center of the earth). The gravitational force of the object at the same point on the ground is proportional to the mass m of the object, and similarly, when m is constant, the gravitational force of the object is proportional to the acceleration of gravity g, which is expressed by the relation g=mg.

Usually near the earth's surface, the g value is about, which means that the gravitational force exerted on an object with a mass of 1 kg is. (is an average; At the equator, g is the smallest, g=; At the poles g is maximum, g = . n is the unit of force, the letters are denoted as n, and 1n is about the force to pick up two eggs).

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 circular motion around the earth's axis together with the earth, which requires a centripetal force directed perpendicularly 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 points to 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.

First of all, you're wrong about going straight down.

When we say that the direction of gravity is really downward, it does not mean that there is a horizon line in the universe and then all of them are pointed vertically to this horizon.

The vertical downward direction is different in different parts of the earth.

Gravity is only a component of the gravitational disturbance force f between the object and the earth, and there is a saying that it is the resultant force of the gravitational force f and the centrifugal inertial force of the object m.

But one thing is for sure:

The gravitational force points to the center of the earth, and gravity is only slightly away from the center of the earth.

The gravitational force that we people receive is directed towards the center of the earth, and although the gravity is slightly off, it is because the earth is round.

So this force is almost perpendicular to the tangent direction of the circle we are in, and because the earth is large, this tangent direction can be seen as the horizon of our location, and gravity is almost perpendicular to it.

So it's straight down.