Where is the position of the center of gravity of different objects in general5

The center of gravity of an object is an equivalent position, which is to divide the object into many small pieces, each with its own gravity value and corresponding center of gravity position, when these small pieces are all put together, the overall equilibrium point (center of gravity) position may or may not be on the object. For example, in a ring with uniform mass distribution, the equivalent overall center of gravity is in the center of the circle, not on the ring.

1.The mass is evenly distributed and the shape is regular in its geometric center, such as the square in the center;

2.If the mass distribution is uneven and the shape is irregular, the center of gravity is generally measured by the suspension method and the support method.

3.The center of gravity can be on the object or outside the object.

Hang a point of the object with a line, make an extension of the line on the object, and do the same thing by changing the point, then there will be two intersecting lines on the object, and the intersection point is the center of gravity of the object.

First look at whether the object is regular, if it is regular, it is divided into 3 equal points, the focus is the center, if it is irregular, it is suspended with a thin line, and after stabilization, its center of gravity is in the straight line where the thin line is located.

Hope it helps.

If the density is uniform, the center of gravity of the object is at the geometric center of the object!

In real life, it is impossible to be absolutely uniform, and the first floor is correct.

It's back to the junior high school physics era.

If the density is uniform.

The center of gravity of a regular geometry is the center of gravity.

The focal point of the longest diagonal.

The center of gravity of the object can be found by the hanging method, the support method, and the needle top method. The position of the center of gravity of the object, the mass is evenly distributed.

The position of the center of gravity is only related to the shape of the object. For an object with a regular shape, its center of gravity is on the geometric center, and the center of gravity of an irregular object can be determined by the suspension method, and the center of gravity of the object is not necessarily on the object.

1. Suspension method:

Apply only to thin sheets (not necessarily uniform). First find a thin rope, find a point on the object, hang it with a squire rope, draw the gravity line after the object is stationary, and find a little more hanging, the intersection of the two gravity lines is the center of gravity of the object.

2. Support method:

Apply only to fine sticks (not necessarily uniform). Supporting the object with a fulcrum, constantly changing position, the more stable the position, the closer to the center of gravity.

One possible workaround is to use two fulcrums to support and then apply a lesser force to bring the two fulcrums closer because of the friction of the fulcrum close to the center of gravity.

will be larger, so the object will move with it, bringing the other pivot point closer to the center of gravity, so that an approximate position of the center of gravity can be found.

3. Pintop method:

The same applies only to thin sheets. Use a thin needle against the underside of the board, and when the board is able to maintain balance, the top of the needle is positioned close to the center of gravity.

The center of gravity of an object may be on or outside the object. An object with a uniform mass distribution and regular shape, with its center of gravity at its geometric center. For example, a spherical shell with a uniform mass distribution and hollow has a center of gravity at the center of the sphere, and a homogeneous equilateral triangular plate has a center of gravity at the center of the triangle.

Gravity refers to the attraction of objects with mass to each other, and it is also the weight of the object. The formula for calculating the dust fiber is: g=mg, g is the scale factor, and the gravity is about, which means that the gravitational force on an object with a mass of 1kg is.

In addition, gravity changes with the magnitude of latitude.

The force exerted on an object due to the attraction of the earth is called gravity. The direction is always straight downwards and is not necessarily directed towards the center of the earth (only at the equator and the poles point to the center of the earth). The magnitude of the gravitational force on 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 gravitational acceleration g, which is represented by the relation g=mg.

Usually near the earth's surface, the g value is about, which means that the gravitational force experienced by an object with a mass of 1kg 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, and the word year brother round mother is expressed as n, and 1n is about the force to pick up two eggs. ）

The center of gravity is on the center of mass of the object.

The point at which the balance of the object is maintained is the center of gravity. 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.

The center of gravity of an object, not necessarily on the object. The position of the center of gravity is only related to the shape of the object. For objects with uniform mass distribution (uniform objects), the position of the center of gravity is only related to the shape of the object, and the center of gravity of an object with a regular shape is on the geometric center of gravity, the center of the uniform thin straight rod is at the midpoint of the rod, and the center of gravity of an irregular object can be determined by the suspension method.

Introduction to the center of gravity of the object:

The center of gravity of an object is the point at which the resultant force of gravity on each part of the object is applied. Every tiny part of an object is subject to gravity (see Gravitational Force), which can be approximated as a system of intersecting forces that intersect at the Earth's changing center. Since the size of an object is much smaller than the radius of the Earth, the gravitational force acting on an object in general can be approximated as a parallel force system, and the total weight of the object is the resultant force of these gravitational forces.

If the volume and shape of an object are constant, the gravitational force on the object will always pass through a determined point in the coordinate system fixed to the object, i.e., the center of gravity, regardless of the direction the object is in to the ground. The center of gravity is not necessarily on the object, for example, the center of gravity of a ring is not on the ring, but on its center of symmetry.

The center of gravity is the point at which the resultant force of the Earth on each tiny part of the gravitational pull of an object.

Every tiny part of an object is subject to gravity.

(see gravitational forces, which can be approximated as converging systems of forces intersecting at the center of the earth.) As the size of the object is much smaller than the radius of the earth.

Therefore, the gravitational force acting on an object in general can be approximately regarded as a parallel force system, and the total weight of the object is the resultant force of these gravitational forces.

Any object on Earth is subject to the gravitational pull of the Earth, and if the object is hypothetically divided into an infinite number of parts, then all these tiny parts are subjected to the gravitational pull of the Earth.

A spatial intersection system (with the intersection at the center of the Earth) will be formed. Since the size of the object is much smaller than the radius of the Earth, it can be approximated that this system of force is a system of parallel forces in space, and the net force g of this parallel system is the gravitational force of the object.

Determination of the center of gravity:

The position of the center of gravity of the object, the mass is evenly distributed.

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 irregular object can be determined by the suspension method.

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. Heavy trucks take a car.

The center of gravity changes with how much is loaded and the loading position, and the center of gravity of the crane changes with the weight and height of the object being lifted.

The above content reference:Encyclopedia - the center of gravity of the friendship chong.