Difference Between Physical Mass and Weight Name at least two points

This answer on the first floor is good and detailed, and the amount is topped down first

However, in the first point, it is said that "weight reflects the magnitude of the gravitational force on the object", and in the second point, it says that "weight is a vector", since it reflects the size, how did it become a vector again?? ~

Mass: A measure of how much substance an object contains.

Mass can only be measured with a balance, which has a number of standard masses at one end.

The weight while the other end is placed on the object being measured, so that it is not subject to the ground.

Effects of gravity.

Weight: The force generated on an object due to gravity.

The weight is different everywhere, and the gravity is measured by the spring scale tung slag, and the standard quality.

Weights are measured at the equator and at the earth level with spring scales.

The weight is different. Quantity: This is not a special term in physics.

Refers to the number of objects.

1. In daily life, the meaning of quality collapse is the same as weight, weight also refers to quality, and the quality does not change with the state and position of the object. The units are kilograms, tons, etc.

2. But in physics, weight often refers to the gravitational force of an object, that is, the unit is ox.

3. The gravitational force will change with the gravitational attraction of the planet, for example, the gravitational acceleration of the earth's poles is greater than that of other places, so the gravity of objects at the poles will also be greater than that of other places; For example, if the gravitational pull of the Moon is smaller than that of the Earth, then the gravitational force of the same object on the Earth is greater than that on the Moon.

Mass and weight bai are two completely different physical quantities, and the two have the following differences: Zhi first of all.

DAOs are defined differently. Mass is a measure of the inertia of an object, and it is an inherent property of the object itself. When the speed of motion of an object is much less than the speed of light, mass can be considered to be a constant quantity.

Weight is a concept of force, which refers to the magnitude of the gravitational force (usually called gravity on the earth) on the planet, and its magnitude changes with factors such as geographical location, altitude, and mass of celestial bodies, which is a variable.

Quality is a scalar quantity. The weight is a vector with direction and size.

In Newtonian mechanics, mass is a constant quantity, while weight varies with the latitude and altitude at which the object is located.

The units of mass and weight are also different in the International System of Units, where the unit of mass is kilograms and the unit of weight is Newton. In practice, the unit of weight is usually kilogram-force or gram-force.

Weight is not said in physics.

In daily life, we buy some things and often say how many kilograms or catties they weigh. The weight here is actually the mass. Because the bench scale or rod scale used by the salesperson is a lever type of measuring tool like a balance, it can only measure the mass of the object.

In addition, when we buy something, we often care about the amount of substances it contains. That is, we care about the size of the mass, and the kilogram and the kilogram are also units of mass, so the weight in daily life is actually the mass.

And look here.

In physics, weight and mass are different, mass is the amount of material contained in the object itself, is a property of itself, and has nothing to do with the outside world, its units are grams, kilograms, tons, and often used in life, two, catty, kilogram as a unit; Weight is the force that an object is attracted by the earth in a certain place, it is a kind of gravitational force, it is a category of force, and its units are Newtons, thousand Newtons. In physics, gravity and mass are two different concepts, weight refers to gravity and mass refers to how many kilograms. But in life, people are more concerned about the amount of a certain substance contained in an object, so people often say that weight refers to mass.

Gravity is mg, that is, weight, mass is m, general mass multiplied by g is gravity, the main reason is that the gravitational acceleration g is not the same, although most of them are used or 10n kg, but g will change, there are hints in the question.

Neither mass does not equal weight.

The mass is measured by the balance, and the gravitational acceleration on the left and right sides of the balance is the same (i.e. g, m1g=m2g, and m1=m2 if g is about to fall), and is not affected by gravity.

Whereas, gravity refers to the mass of g = mg multiplied by the acceleration due to gravity.

Weight refers to mass, whereas gravity refers to the gravitational pull on an object from the Earth. The relationship between gravity and mass is g=mg (g is gravity, m is mass, g is kg and the unit of gravity is ox.

It refers to the mass that is often said, that is, the unit kilogram, gram, tael, catty, ton, etc.

No, the amount of quality refers to more than enough kilograms, and it has nothing to do with whether there is gravitational g.

Whereas, weight is the mass multiplied by g, i.e. back to m*g.

We answer that there is no distinction between weight and mass, which we often say in life, we regard it as the same, but in fact they have a relationship of g, that is, weight is equal to mass multiplied by the constant g.

To be precise, weight is a measure of physical gravity, and physical gravity is the mass multiplied by this g, g =, which is often specified as 10 in the calculation.

The weight is usually called mass in mass, which is represented by m, the volume is represented by v, and the density is represented by .

When the volume and density are known, they can be calculated using the following formula: m= v, i.e., mass density x volume.

where w is the weight, m is the mass destruction, and g is the acceleration of free fall, which is about on the surface of the earth, and its value is less than the acceleration due to gravity.

Commonly used units of mass are: micrograms (ug), milligrams (mg), grams (g), kilograms (kg), tons (t), etc.

Mass-energy equivalence relationship

Equivalence (equivalence) of mass and energy. The relationship between mass and energy was first proposed by physicist Albert Einstein in 1905. In Newtonian mechanics, the mass of an object is seen as constant, i.e., independent of the magnitude of the object's velocity.

Under the continuous action of constant external force, the velocity increment of the original stationary particle is proportional to the application time of the force. Therefore, if the force acts for a long enough time, the velocity of the particle will exceed the speed of light, which is inconsistent with the fact that the speed of light is the ultimate velocity. Silver.

The above content reference: Encyclopedia - Quality.

Summary. Pro: Weight is gravity in physics, equal to mg, I hope it can help you Is weight the ratio of gravity to matter on an object?

Pro: Weight is gravity in physics, equal to mg, I hope it can help you Are you sure? That is, the product of the mass and the proportional coefficient, the size of g is about the weight in physics and the weight we usually talk about is not the same as the weight of the wheel finger socks such as the weight of physics refers to the product of the mass and the proportional coefficient, and the weight of the wax in life, such as 100 catties, is the mass

So weight is gravity?

Yes, weight in physics is gravity, equal to mg, I hope it can help you