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1 kilogram-force square meter second [kgf m s²] = 9.80664999978773 kilogram square. meter [kg m²]

Initial value

Converted value

kilogram sq. meter kilogram square. centimeter kilogram square millimeter gram sq. centimeter gram square millimeter kilogram-force meter square. second ounce sq. inch ounce-force inch sq. second psi ft lbf ft sq. second psi in. lbf in. sq. second slg sq. foot

Magnetomotive force

More about moment of inertia

General information

Moment of inertia is the property of a body to resist a change in rotational speed. The higher the moment of inertia, the greater this opposition. Moment of inertia is often compared to the concept of mass for rectilinear motion, since mass determines how much a body resists such motion. The distribution of mass over the volume of the body does not affect rectilinear motion, but has great importance during rotation, since the moment of inertia depends on it.

It is possible to determine the moment of inertia for bodies of a simple geometric shape and with a constant density using generally accepted formulas. For bodies of more complex shapes, mathematical analysis is used. Depending on how the weight is distributed inside the bodies, two bodies with the same mass can have a different moment of inertia. For example, moment of inertia I for a homogeneous ball, with the same density throughout the volume, is found by the formula:

I = 2mr²/5

Here m is the mass of the ball, and r is its radius. If we take two balls the same mass, with the radius of the first twice the radius of the second, then the moment of inertia of the larger ball will be 2² = 4 times the first. In this formula, the radius is the distance from the center of rotation to the point on the body farthest from this center for which the moment of inertia is measured. If we take a cylinder with mass m, which is equal to the mass of one of the balls above, and with a distance L from the center of rotation to the outermost point, so that this value is equal to the radius of this ball, then the moment of inertia of the cylinder I will be equal to:

I = mr²/3

in case the cylinder rotates around its base. The moment of inertia will be equal to:

I = mr²/12

if the cylinder rotates about an axis passing through its center along its length. With this rotation, the cylinder becomes like a propeller. The second formula is easy to obtain from the first: the radius from the center of rotation to the most distant point is equal to half the length of the cylinder, but since this radius is squared, then 1/2 L(or r) becomes 1/4 L² (or r²). In any case, looking at these formulas, it is easy to see that the shape of the body and even just the displacement of the center of rotation significantly affect the moment of inertia. The moment of inertia plays an important role in sports and in mechanics, and it is regulated by changing the mass or shape of objects and even the athlete's body.

In sports

Often, by decreasing or increasing the moment of inertia, you can improve performance in sports. A high moment of inertia maintains a constant speed of rotation or helps to maintain balance even if the speed is zero. If the speed is zero, then the person or object simply does not rotate. A small moment of inertia, on the contrary, makes it easy to change the rotation speed. That is, decreasing the moment of inertia reduces the amount of energy needed to increase or decrease the speed of rotation. The moment of inertia is so important in sports that some researchers believe that for exercises that use several projectiles or sports equipment of the same weight but different configurations, one should select projectiles and equipment with a similar moment of inertia. This is practiced, for example, in golf: some believe that if you use clubs with the same moment of inertia, this will help the athlete improve the swing, that is, the main blow to the ball. In other sports, athletes sometimes, on the contrary, choose equipment with different moments of inertia, depending on what effect they want to achieve, for example, how quickly they need to hit the ball with a stick, or a bat. Some use sports equipment with a high moment of inertia to increase muscle strength and endurance without adding weight to the projectile. So, for example, the moment of inertia of a baseball bat affects how much speed it will give to the ball.

High moment of inertia

In some cases, it is necessary that the rotational movement continues and does not stop, despite the fact that the forces acting on the body oppose this movement. For example, gymnasts, dancers, divers or figure skaters who are spinning or turning over on ice or in the air need to continue this movement for a certain amount of time. To do this, they can increase the moment of inertia by increasing the weight of the body. This can be achieved by holding weights during rotation, which are then released or discarded when such a large moment of inertia is no longer needed. This is not always advisable and can even be dangerous if the load is thrown in the wrong direction and causes damage or injury. Two people can also join hands during the spin, joining their weight, and then let go of each other when they don't need to spin anymore. This technique is often used in figure skating.

Instead of mass, you can also increase the radius from the center of rotation to the point furthest from it. To do this, you can stretch your arms or legs to the sides of the body, or pick up a long pole.

An athlete, such as a diver, may need to increase the moment of inertia before entering the water. When it spins in the air and takes the right direction, it straightens up to stop the rotation, and at the same time increase the radius and, accordingly, the moment of inertia. Thus, its zero rotation speed is more difficult to change, and the athlete enters the water under right angle. This technique is also used by dancers, gymnasts and figure skaters during dances and exercises in order to land accurately after spinning in the air.

As we have just seen, the higher the moment of inertia, the easier it is to maintain a constant rotational speed, even if it is zero, that is, the body is at rest. This may be necessary both in order to maintain rotation, as well as to maintain balance in the absence of rotation. For example, in order not to fall, acrobats who walk on a tightrope often hold a long pole in their hands, thereby increasing the radius from the center of rotation to the point furthest from it.

The moment of inertia is often used in weightlifting. The weight of the discs is distributed across the bar to ensure safety during barbell lifting exercises. If, instead of a barbell, an object of smaller size but the same weight as the barbell is lifted, such as a sandbag or a kettlebell, then even a very small shift in the angle of elevation can be dangerous. If the athlete pushes the kettlebell up, but at an angle, then it may begin to rotate around its axis. The large weight and small radius of the kettlebell means that, compared to a barbell of the same weight, it is much easier to start spinning. Therefore, if it starts to rotate around its axis, it is very difficult to stop it. It is easy for an athlete to lose control of the kettlebell and drop it. This is especially dangerous if the lifter lifts the kettlebell over his head while standing, or over his chest while lying down. Even if the kettlebell does not fall, the athlete may injure the hands while trying to prevent the kettlebell from spinning and falling. The same thing can happen when exercising with a particularly heavy barbell, so the fastening of the discs on barbells designed for exercises with very large weights is movable. The disks rotate around their axis during the lifting of the bar, and the bar itself remains stationary. Barbells designed for the Olympic Games, which are called Olympic barbells, have just such a design.

To ensure safety during kettlebell training, it is common to move the center of rotation as far from the center of the kettlebell as possible. Most often, the new center of rotation is on the body of the athlete, for example, in the area of ​​​​the shoulder. That is, usually the kettlebell is not rotated with the help of the hand or around the elbow joint. On the contrary, it is pumped from side to side or up and down around the body, otherwise it is dangerous to work with it.

Low moment of inertia

In sports, it is often necessary to increase or decrease the speed of rotation, using as little energy as possible. To do this, athletes choose projectiles and equipment with a small moment of inertia, or reduce the moment of inertia of their body.

In some cases, the total moment of inertia of the athlete's body is important. In this situation, athletes press their arms and legs against their torso to reduce the moment of inertia during rotation. This allows them to move faster and spin faster. This technique is used in figure skating, diving, gymnastics and dancing. To experience this effect for yourself, it is not necessary to practice one of these sports, just sit in office chair, unwind the seat, exposing the arms and legs, and then press the arms and legs to the body. This will increase the rotation speed.

In other sports, not the entire body of the athlete rotates, but only part of it, for example, a hand with a bat or a golf club. In this case, the weight is distributed over the bat or club so as to increase the moment of inertia. This is also important for swords, both real and wooden swords for training in martial arts, and for any other equipment that athletes twist or rotate, including bowling balls. The moment of inertia also affects how heavy the inventory seems to be during its use and how much energy is expended to change its rotation speed. The smaller the moment of inertia, the lighter the inventory usually seems, and the faster it can be rotated. This allows the athlete more time to observe the opponent before starting to move. Sometimes this extra time gives an advantage in sports games, as the athlete can react faster to the movements of the opponent. With these extra seconds, it becomes easier to predict the trajectory of the opponent, or the ball, for example in tennis and baseball, and make a more accurate shot.

It should be remembered that at the same speed of rotation of the bit, the one with a higher moment of inertia will transfer more speed to the ball upon impact, although this bit must be rotated with more energy. Therefore, a projectile with a low moment of inertia is not necessarily better - in some cases, athletes, on the contrary, prefer projectiles with a high moment of inertia. Such shells develop muscles, which, in turn, helps to speed up the reaction.

Golf clubs and tennis rackets usually have information about their moment of inertia, but baseball bats most often do not write it. Why this is so is not known, although it is likely related to sports marketing. In any case, if there is no information about the moment of inertia of a sports equipment, then it is worth trying this projectile well before buying, and comparing it with several others to determine if it suits you for your purposes.

Do you find it difficult to translate units of measurement from one language to another? Colleagues are ready to help you. Post a question to TCTerms and within a few minutes you will receive an answer.

In order to find out how many cubic centimeters per gram are in a cubic meter per kilogram, you need to use a simple online calculator. Enter in the left field the number of cubic meters per kilogram you are interested in that you want to convert. In the field on the right you will see the result of the calculation. If you need to convert cubic meters per kilogram or cubic centimeters per gram to other units, just click on the appropriate link.

What is "cubic meter per kilogram"

The cubic meter per kilogram (m³/kg) is the physical quantity of the International SI (system of measurement) for correct calculation specific volume.

The specific volume is 1 m³ / kg, if the mass is 1 cu. meters given substance equals 1 kg.

What is "cubic centimeter per gram"

A cubic centimeter per gram (cm³/g) is a unit of specific volume in the Centimeters-gram-second system, or CGS for short.

This system was used before the introduction of the International SI (system of units). The specific volume of a substance is 1 cm³ / g, if the mass of 1 m³ of this substance is 1 g.

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Convert kilogram to m3 and vice versa

Reference data:

Water density 1000 kg/m3
Density of steel 7800 kg/m3
The density of concrete is 1400 ... 2500 kg / m3
Color density 900 … 1600 kg/m3
The density of milk is 1027 ... 1033 kg / m3
Oil density is 730 … 1040 kg/m3
Gas density – 750 kg/m3
The density of diesel fuel is 830 ... 860 kg / m3

The list of basic materials and their density are presented in this table.

How do we convert kilogram to cubic meter?

The density of the material depends on the temperature of the medium, see reference books for exact density data.

Theory:

Mass is a property of a body, which is a measure of the gravitational interaction with other bodies.

Volume is a quantitative characteristic of the space occupied by a body, structure or substance.

Density is a physical quantity defined as the ratio of body weight to body volume.

The relationship between volume and mass is determined by a simple mathematical formula:

V = m / p, where

V is the volume;
m is the mass;
p is the density.

solutions:

This simple mathematical operation can be quickly solved through our online software.

To do this, enter the initial value in the appropriate field and click the button.

This page provides a simple web translator for units of kilograms to cubic meters. With this calculator you can convert kilogram to m3 and vice versa with just one click.

How to convert kilograms to cubic meters

This web service converts volume values ​​from one device to another.

In the form of a calculator, select the desired volume of the unit of measure, enter its value, specify the units for conversion and calculate the accuracy, and click "Calculate".

Capacity is the ability of a geometric body, that is, a part of space that is bounded by one or more closed surfaces.

Volume is expressed as the number of cubic units that fit into certain containers.

Accepted units of measurement - in SI and its derivatives - cubic meter, cubic centimeter, liter (cubic decimeter), etc. Outside the system - gallon, barrel, bushel.

The word "area" is also used figuratively to mean a general or current meaning. For example, "volume of demand".

In the visual arts, the scope is an illusory transfer of the spatial characteristics of an object depicted by artistic methods.

Table of commonly used units:

conversion from export unit (m3/unit)
acre feet ac ft 1233.481838
turf (brit.) bale 0.16365924
sod (oil) bale 0,158987295
cask (US dry matter) bale 0,115628199
barrel (American liquid) bale 0,119240471
bushel (brit.) bushel 0.03636872
bushel (US dry) bushel 0.03523907
rope rope 3,624556364
cube legs ft³ 0,028316847
cubic v3 1.63871E-5
cubic centimeter cm3 1.0E-6
cubic meter 1
cubic kilometer cubic km 1000000000
cubic miles mi³ 4168181825
cubic yard yd³ 0,764554858
mixer With 0,00025
glass (Canadian) With 0,000227305
glass (USA) With 0,000236588
ounce (Brit.

liquid)

or 2.84131E-5
ounce (US liquid) or 2.95735E-5
gallon (UK). gal 0.00454609
gallon (US dry) gal 0,004404884
gallon (US liquid) gal 0,003785412
Gil (Brit.) soldier 0,000142065
Gil (USA) soldier 0,000118294
turf (brit.) HHD 0.32731848
barrel (US) HHD 0,238480942
liter L 0,001
milliliter ml 1.0E-6
resin (Brit). rk 0.00909218
resin (US dry) rk 0,008809768
pint (British). Fri 0,000568261
pint (US dry) Fri 0.00055061
pint (American liquid) Fri 0,000473176
district (brit.) quarts 0,001136523
Quart (US dry matter) quarts 0,001101221
Quart (American Liquid) quarts 0,000946353
spoon st.l. 1.5E-5
spoon (Canadian) st.l. 1.42065E-5
spoon (Brit). st.l. 1.77582E-5
spoon (US) st.l. 1.47868E-5
tsp TSP 5.0E-6
teaspoon (Canadian) TSP 4.73551E-6
teaspoon (brit.) TSP 5.91939E-6
teaspoon (US) TSP 4.92892E-6

Choose an environment:

Enter volume in liters:

As you know, the cubic meter is a unit of volume. This fact is generally recognized. The side of such a cube is 1 meter. This indicator is used to determine the volume of containers such as tank, tank or tank.

In any case, volumetric calculations sometimes arise due to problems caused by using a different volume measurement unit - liters. In order to calculate the amount needed to store any substance, or to calculate the volume consumed by a liquid, it is also useful to calculate their mass (mass), which usually does not correspond to the number of liters.

What is the complexity of calculating the amount of power?

For the storage and transport of substances such as methane, oil, gasoline, milk, the water tank is protected by a special displacement volume, which in practice must be known in cubes and sometimes in kilograms. Sometimes it is necessary to convert liters to tons.

The formula for calculating the volume for different substances is simple, but in practice they often encounter errors. Therefore, it will not be superfluous if you take a few minutes and try using our calculator. After all, the error in solving the problem can only be stressful with a low estimate, in practice, incorrect calculations can lead to the production of power with insufficient quantity, and this is an unnecessary waste.

Instructions for using the web calculator

If you want to quickly convert letters to cubes, our online calculator is for you. All you have to do is select the substance, mass and volume from the list for which you are to calculate, and in the appropriate format enter the number of liters you want to convert to cubes.

How to convert kg to cubic meter

Formula for calculating mass from volume

To calculate the volume of a liquid, you can use the simplest formula from school course in physics

V=m/p

where V is the volume of the liquid (substances) in liters, m is the mass of the liquid (substance), p is the density of the liquid (substances).

The following density values ​​were used in calculating the calculator from the table below.

Matter Density Table

If you did not find the desired substance in the proposed list - contact us - we will add it.

It would seem that converting kilograms into meters delusional, however, in a number technical tasks it is necessary. For such a translation, you need the ability to linear density or ordinary density of the material.

You will need

  • knowledge of linear density or material density

Instruction

1. Units of mass are converted to units of length with the help of a physical quantity called linear density. In the SI system, it has the dimension kg/m. As you can see, this value differs from the traditional density, which expresses mass per unit volume. Linear density is used to collate the thickness of threads, wires, fabrics, etc., as well as to collate beams, rails, etc.

2. From the definition of linear density, it follows that to convert mass into length, you need to divide the mass in kilograms by the linear density in kg / m. This will give us the length in meters. This length will be the given mass.

3. In the event that we know the ordinary density with the dimension of kilogram per cubic meter, then to calculate the length of the material in which the mass is contained, we need to divide the mass by the density, and then by the cross-sectional area of ​​​​the material. Thus, the formula for the length will look like this: l \u003d V / S \u003d (m / p * S), where m is the mass, V is the volume containing the mass, S is the cross-sectional area, p is the density.

4. In the most primitive cases, the cross section of the material will be either round or rectangular. The area of ​​a circular section will be equal to pi*(R^2), where R is the radius of the section. In the case of a rectangular section, its area will be equal to a*b, where a and b are the lengths of the sides of the section. If the section has a non-standard shape, then in all defined case it is necessary to find the area of ​​that geometric figure, which is a section.

In a number of problems, you need to find out how long a piece of material contains a given mass. In such a problem, knowing kilograms, you need to find meters. For such a translation, knowledge of the linear density or the traditional density of the material is required.

You will need

  • linear density or material density

Instruction

1. Units of mass are converted to units of length with the help of a physical quantity called linear density. In the SI system, it has the dimension kg/m. This value differs from the traditional density, which expresses mass per unit volume. Linear density is used to collate the thickness of threads, wires, fabrics, etc., as well as to collate beams, rails, etc.

2. From the definition of linear density, it follows that to convert mass into length, you need to divide the mass in kilograms by the linear density in kg / m. This will give you the length in meters. This length will contain the given mass.

3. In the event that you are familiar with ordinary density with the dimension of kilogram per cubic meter, then to calculate the length of the material in which the mass is contained, you must first obtain the volume of material containing this mass. To do this, you need to divide the mass by the density. After that, the resulting volume must be divided by the cross-sectional area of ​​\u200b\u200bthe material. Thus, the formula for the length will look like this: l \u003d V / S \u003d (m / p * S), where m is the mass, V is the volume containing the mass, S is the cross-sectional area, p is the density.

4. In commonplace cases, the cross section of the material will have either a round or rectangular shape. The area of ​​a circular section will be equal to pi * (R ^ 2), where R is the radius of the section. In the case of a rectangular section, its area will be equal to a * b, where a and b are the lengths of the sides of the section. If the section has a non-standard shape, then you need to find the area that geometric figure in cross section.

Almost every person must have heard the expression "linear meter". For many, this definition remains quite complicated, since it is not at all clear what is the difference between sq. m. from the usual. What is the conversation about?

One linear meter equals the usual length of one meter. It is used to measure goods that have a certain width, for example, linoleum. It is much easier to calculate the cost of goods, taking running meters as a basis, than to calculate the cost of a square one.

For example, you need to buy carpet in the store, 2.5 wide and a certain length. Make a calculation of 1 m2, such a segment is not very convenient. To do this, you need to determine the area of ​​\u200b\u200bthe product. Then divide it into squares. In other words, it is necessary to perform complex mathematical calculations.

It's much easier to do calculations on a per-square basis. To determine the cost of the goods, you will need to multiply the length of the segment of the carpet by the number of meters.

There is a fairly large list of goods in which the cost is calculated by the number of running meters. These include.

  • Fabrics.
  • Linoleum.
  • Carpet.
  • Finishing film.
  • Roll polyethylene.
  • Electric wires.
  • All kinds of pipes.
  • Various fences.
  • Fences.

Furniture calculation

A lot of consumers believe that the calculation by running meters applies only to rolled materials. However, this opinion is not entirely correct. When buying a product, we often come across a certain roll width. Linear very often determine the cost of furniture.

To make it clear, let's look at the following example.

The furniture manufacturer made an approximate calculation. To completely fill the three-meter kitchen, taking into account all the details of the furniture, he will need 30,000 rubles. Therefore, the cost of 1 m of furniture will be 10,000 rubles. In other words, such a cost will correspond to the price of one running meter. Based on these fairly simple mathematical calculations, the furniture manufacturer can inform the customer what the cost of a set of furniture of the corresponding sample will be.

However, one important nuance must be taken into account. When calculating the price m, only the cost of the cheapest fittings and material was taken into account. Sometimes the cost of fittings is not included in the calculation at all.

Therefore, if you are made a very tempting offer, you must definitely find out what material the product is made of, what accessories are installed on it. In this way, quite often attract new customers.

How many mm in a linear meter

As already mentioned, one linear meter is equal to one standard meter. This means that at 1 running meter 1000 mm.

cheat sheet

So, to make it easier to deal with units of measurement, they can be summarized in one table, in which their ratio will be visible, and it will be quite easy to convert one unit to another.

What does the term "square meter" mean?

This unit is designed to calculate the area of ​​a square, in which each of the sides will be 1 meter. To determine the size of the area, you need to multiply the height and length of the product. Used to designate short form- sq. m.

Today, this unit is found in our lives almost everywhere. The most obvious example is the dimensions of a dwelling. In other words, if we are talking about an apartment of 16 m2, then the floor area is equal to this value.

The square meter is most often found in construction industry. To determine the area of ​​a wall that is 6 meters long and 4 meters high, simply multiply six by four. It turns out that the area of ​​\u200b\u200bthe wall is 24 m2.


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