The center of gravity of an object is not necessarily on the object, why? Can you give an example

The center of gravity is the point at which the resultant force of all the constituent fulcrums of the gravity force passes through the object in any direction in the gravitational field. The center of gravity of a regular and uniform object is its geometric center. The center of gravity of an irregular object can be determined by the suspension method.

In the case of an object with uneven mass distribution, the position of the center of gravity is not only related to the shape of the object, but also to the distribution of mass within the object. The center of gravity of a truck changes with how much is loaded and where it is loaded, and the center of gravity of a crane changes with the weight and height of the object being lifted.

The center of gravity is the equivalent point of gravity of the whole, in fact, every part of the object is subject to gravity, and the force of other parts can be moved to the center of gravity, so that the problem is very simple, the center of gravity of an object with a regular shape is on its geometric center, but it is not a real gravity action point such as a uniform ring, its center of gravity is on the center of the circle, not on the ring.

An example: a ring, the center of gravity is not on the ring.

For example, a bracelet is hollow in the middle, but the center of gravity is in the center of the circle, so it is not on the object.

There are a lot of this, such as the ring, the center of gravity of the "7" shaped object in Tetris is not on the object, and the specific reason is that I think the upstairs is more authoritative.

Lifebuoys and hula hoops are typical examples.

Wait, I'll look up college physics, I remember there was, I forgot.

The center of gravity of an object is not necessarily on the object, the center of gravity is just abstracted to represent the point where the whole object is subjected to gravity, in fact, the whole object is subject to gravity everywhere. An object with a regular shape and uniform mass distribution has a center of gravity in the middle, not necessarily on the object, such as a bracelet, etc.

The center of gravity is the equivalent point of gravity of the whole, in fact, every part of the object is subject to gravity, and the force of other parts can be moved to the center of gravity, so that the problem is very simple, the center of gravity of an object with a regular shape is on its geometric center, but it is not a real gravity action point such as a uniform ring, its center of gravity is on the center of the circle, not on the ring.

An example: a ring, the center of gravity is not on the ring.

In a weightless and decompressive environment, the object is not subjected to any gravity, so there is no problem of the center of gravity, let alone on the object.

In an environment like the Earth, an object is subject to gravity, and the center of gravity must be on this object.

If you don't bear gravity, where does the center of gravity come from. Since gravity is applied, there is no doubt that the center of gravity is on that object. For example, in any case, anything that does not exceed the Earth's gravitational sphere will be captured by gravity and eventually fall.

The center of gravity is generally the position of the regular object at the geometric center of the object.

For example, the center of gravity of a hollow ball is at the center of the ball.

The center of gravity of the uniform ring is at the center of the circle.

Because the center of gravity is the intersection of the lines of action of the two pairs of equilibrium forces. This intersection is not necessarily on the object.

For example, the center of gravity of a triangle is the intersection of two or three angles, and the intersection is in the hollow, so it is not on the triangle.

Hollow rings, the center of gravity is not on the ring, this is just a special case, welcome.

The center of gravity of a flat ring is not on the ring, but at the center of the circle.

For example, the center of the hula hoop ring is not on the object.

The simplest object is the bow, where the center of gravity is at a point other than its object.

Summary. The center of gravity of an object is at the center of gravity of the object, and the center of gravity of a geometric body with a uniform texture (such as a circle) is its center of collection, but some things are hollow, and the center of gravity is not on the object, such as a disc.

The center of gravity of an object is not necessarily on the object How do you explain this sentence?

The center of gravity of an object is at the center of gravity of the object, and the center of gravity of a geometric body with a uniform texture (e.g. a circle) is the center of its rotten cluster, but some things are hollow, and the center of gravity is not on the object, such as a disc.

2013-04-01The center of gravity is the equivalent point of gravity of the whole, in fact, each part of the object is subject to gravity, and the force of other parts can be moved to the center of gravity, so that the problem is very simple, the center of gravity of the object with a regular shape is in its geometry, but it is not a real gravity action point such as a uniform ring, its center of gravity is on the center of the circle, not on the ring.

Answer: The point of gravity on the object is called the center of gravity The center of gravity is not necessarily inside the object, for a cuboid, cube, cylinder, sphere, etc. with regular shape and uniform mass distribution, its center of gravity is on the geometric center of the object; For objects with irregular shapes and uneven mass distribution, the center of gravity is not in the center of the object, or even on the object For example: the center of gravity of a banana is on its inside, and the banana is outside

The center of gravity is not a physical property of an object, it is a term used to describe the balance of an object under the action of gravity, for some objects with uniform mass the center of gravity is on its geometric center, and the center of gravity of other objects tends to deviate from the geometric center or is not on the object.

All parts of an object are subject to gravity. In terms of effect, we can think that the gravitational effect on each part is concentrated in one point of shouting, which destroys the center of gravity of the object. For objects with uniform mass distribution (homogeneous objects), the position of the center of gravity is only related to the shape of the object.

For example, the center of gravity of a uniform thin straight rod is at the midpoint of the rod, the center of a uniform sphere is at the center of the sphere, and the center of gravity of a uniform cylinder is at the midpoint of the axis. The center of gravity of an object with a regular chain can be determined by the suspension method. The center of gravity of an object, not necessarily on the object.