G constant is 9.8. G - what does it mean

Mention of the concept acceleration of gravity often accompanied by examples and experiments from school textbooks, in which objects of different weight (in particular, a pen and a coin) were dropped from the same height. It seems absolutely obvious that objects will fall to the ground at different intervals (the feather may not fall at all). Therefore, bodies do not obey only one specific rule. However, this seems to be taken for granted only now, some time ago experiments were required in order to confirm this. The researchers reasonably assumed that a certain force acts on the fall of bodies, which affects their movement and, as a result, the speed of vertical movement. This was followed by no less famous experiments with glass tubes with a coin and a pen inside (for the purity of the experiment). Air was evacuated from the tubes, after which they were hermetically sealed. What was the surprise of the researchers when both the pen and the coin, despite the obviously different weight, fall at the same speed.

This experience served as the basis not only for the creation of the concept itself. acceleration of gravity(USP), but also for the assumption that free fall (that is, the fall of a body on which no opposing forces act) is possible only in a vacuum. In air, which is a source of resistance, all bodies move with acceleration.

This is how the concept came about acceleration of gravity, which has the following definition:

• the fall of bodies from a state of rest under the influence of the Earth.

This concept was assigned the alphabet g (zhe).

On the basis of such experiments, it became clear that USP is absolutely characteristic of the Earth, since it is known that there is a force on our planet that attracts all bodies to its surface. However, another question arose: how to measure this quantity and what it equals.

The solution to the first question was found quite quickly: scientists, using special photography, recorded the position of the body during the fall in different periods of time. A curious thing turned out: all bodies in a given place on the Earth fall with the same acceleration, which, however, varies somewhat depending on a particular place on the planet. At the same time, the height from which the bodies began their movement does not matter: it can be 10, 100 or 200 meters.

It was possible to find out: the acceleration of free fall on the Earth is approximately 9.8 N/kg. In fact, this value can be in the range from 9.78 N/kg to 9.83 N/kg. Such a difference (albeit small in the eyes of the layman) is explained both (which is not quite spherical, but flattened at the poles) and daily. As a rule, the average value is taken for calculations - 9.8 N / kg, with large numbers - rounded up to 10 N/kg.

g=9.8 N/kg

Against the background of the data obtained, it can be seen that the acceleration of free fall on other planets differs from that on Earth. Scientists came to the conclusion that it can be expressed by the following formula:

g= G x M planets/(R planets)(2)

In simple words: G (6.67. 10 (-11) m2 / s2 ∙ kg)) must be multiplied by M - the mass of the planet, divided by R - the radius of the planet squared. For example, let's find the acceleration of free fall on the Moon. Knowing that its mass is 7.3477·10(22) kg, and its radius is 1737.10 km, we find that USP=1.62 N/kg. As you can see, the accelerations on the two planets are strikingly different from each other. In particular, on Earth it is almost 6 times more! Simply put, the Moon attracts objects on its surface with a force that is 6 times less than the Earth. That is why the astronauts on the moon, whom we see on television, seem to become lighter. In fact, they lose weight (not mass!). The result is fun effects like jumping several meters, the feeling of flying and long steps.

VALUES OF THE THEORY. The concept of meaning in the analytic philosophy of language is in fact analogous to what is called "mind", "consciousness" (English), or "Geist" (German) in the philosophy of mind, i.e. consciousness, spirit. In terms of meaning... Encyclopedia of Epistemology and Philosophy of Science

The age values ​​that coincide well with each other, obtained by the lead isotope method according to diff. isotope ratios. They testify to the good preservation of the milk and the reliability of the found abs. age. Syn.: age values ​​are concordant. ... ... Geological Encyclopedia

Theoretical values ​​of potential derivatives corresponding to the idealized model of the Earth. They are negligible or exactly equal to zero, so the measured values ​​of the second derivatives of the gravitational potential can practically be considered ... ... Geological Encyclopedia

- (g 0) the theoretical values ​​of the force of gravity acting on a unit mass correspond to such a model of the Earth, in which the density inside the spherical shells is constant and changes only with depth. The structure of their analytical expression ... ... Geological Encyclopedia

Syn. term age values ​​are inconsistent or divergent. Geological dictionary: in 2 volumes. M.: Nedra. Edited by K. N. Paffengolts et al. 1978 ... Geological Encyclopedia

Obtained by the lead isotope method for four dec. Isotopic ratios: , and strongly diverging in magnitude. They testify to the poor preservation of the milk and the violation of the radioactive balance in it between the maternal and ... ... Geological Encyclopedia

Syn. term age values ​​are consistent. Geological dictionary: in 2 volumes. M.: Nedra. Edited by K. N. Paffengolts et al. 1978 ... Geological Encyclopedia

values ​​of abnormal operation parameters- abnormal operation data [Intent] Parallel texts EN RU The P63x generates a large number of signals, processes binary input signals, and acquires measured data during fault free operation of the protected object as well as fault… …

Terms and concepts of general morphology: Dictionary-reference book

verb orientation meanings- Values ​​of spatial modification of actions and derivatives from them ... Dictionary of linguistic terms T.V. Foal

values ​​(voltages) between line and ground- — [Ya.N. Luginsky, M.S. Fezi Zhilinskaya, Yu.S. Kabirov. English Russian Dictionary of Electrical Engineering and Power Industry, Moscow, 1999] Electrical engineering topics, basic concepts EN line to ground values ​​... Technical Translator's Handbook

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This term has other meanings, see G (disambiguation). A letter with a similar style: Ԍ Symbols with a similar style: ɡ · ց Latin letter G

gg
Image
G, g- the seventh letter of the basic Latin alphabet, is called “ge” in Latin and German, in French (and also, according to Russian tradition, in mathematics, physics, chess and other areas) - “je”, in English - “ji” , in Spanish - "he". In biochemistry, G is a symbol for glycine and guanosine, also a type of protein (G-proteins). In anatomy, the G-spot is a small part of the anterior wall of the vagina. In astronomy, G is a preliminary designation prefix for comets, asteroids and minor planets discovered from April 1 to April 15 of any year. In the international vehicle license plate system, it stands for Gabon. In music, the note is salt. In finance, on the New York Stock Exchange, it stands for Gillette. In Masonic symbolism, the letter is associated with God (God, Gott) and geometry. In programming languages, G is the programming language used in LabVIEW. In physics, G is the gravitational constant and the Gibbs energy, g is the unit of acceleration caused by gravity, as well as the Lande multiplier (or g-Factor) and the space-time metric. In postal codes, the first letter: in Canada, denotes the province of Quebec; in the UK - Glasgow. In cinema G - rating General audiences by the Motion Picture Association of America rating system "The film is shown without restrictions" Story In the Etruscan alphabet, which formed the basis of the Latin, the sound /g/ was denoted by a letter similar in spelling to C. Until the third century BC. e. in Latin, the letter C denoted both the sound /k/ and the sound /g/. A remnant of this dual designation has been preserved in the tradition of abbreviating the Roman names Gai and Gnaeus as C. and Cn. respectively. Around the third century BC. e. a horizontal line was added to the letter C, getting a new letter G. Written sources mention the inventor of the letter G - Spurius Carvilius Ruga, who taught around 230 BC. e., - the first Roman freedman who opened a paid school. It is noteworthy that the letter was put in seventh place in the alphabet. In the archaic Latin alphabet, this place was occupied by the letter Z - by analogy with the Greek Ζ (zeta). In 312 BC. e. censor Appius Claudius Caec, who was engaged in the reform of the alphabet, removed this letter as superfluous. By the time of Spurius Karvily, the place of the seventh letter in the alphabet was still perceived as “empty”, vacant, and it was possible to place a new letter on it without bloodshed. The letter Z was returned to the Latin alphabet only in the 1st century BC. e., to the end of the alphabet. Computer encodings In Unicode, capital G is U+0047 and lowercase g is U+0067. In ASCII codes, an uppercase G corresponds to 71, a lowercase g to 103, in binary, respectively, 01000111 and 01100111. The EBCDIC code for an uppercase G is 199, for a lowercase g - 135. The numeric values ​​in HTML and XML are "G" and " g" for upper and lower case, respectively. Gg Gg Gg Gg Braille		Semaphore ABC	Flags of the International Code of Signals	Amslen

G is:

G 1) the seventh letter of the musical alphabet; the name and letter designation of the 7th stage of the sound row that existed in the early Middle Ages, osn. the tone of which was the sound A. The sound lying a tone lower than the main one was then considered additional and was denoted by the Greek. letter G. (gamma). Subsequently, when the place of the main diatonic tones. the scale was occupied by S., the sound G. became the fifth step of this scale. In France, Italy and some other countries, along with the letter designation and more often it is used the syllabic designation of the sound G. - sol (salt). Capital G. denotes the sound of a large octave, lowercase - small; for sounds of higher and lower octaves, additional numbers or dashes are used; so G1 or G denotes the sound of a counteroctave, g2 or - the second octave. To denote chromatic modifications of this degree of the scale to the letter G. add an additional. syllables; increasing it by half a tone is indicated gis (English G. sharp; French sol diise; Russian sol-sharp; Italian sol diesis), increasing it by 2 semitones - gisis (English G. double sharp; French sol double diise; Russian sol double-sharp; Italian sol doppio diesis), lowering by a semitone - ges (English G. flat; French sol bémol; Russian salt flat; Italian sol bemolle), by 2 semitones - geses (English. G. double flat; French sol double bémol; Russian sol double flat; Italian sol doppio bemolle). When denoting keys, the words dur and moll are added to the tonic sound designations, while simultaneously using the capital G for major, and lowercase for minor; so, G-dur means G major, Ges-dur - G-flat major, g-moll - G minor, gis-moll - G-sharp minor. In the theoretical works, tonality can be denoted by one letter; in this case G. means G major, g means G minor. Sometimes musicologists-theorists use the letter designation of triads; in this system, G. means G major tonic. triad, g - G minor.
2) Key sign; the letter G. has been used in this sense along with other letters (see C and F) since the introduction of the linear system into musical notation. The letter G. was placed at the beginning of the stave at the level of the definition. ruler, thereby indicating the position in the musical staff of the sound of the salt of the first octave (g1). Gradually, the outlines of the letter G. as a key sign changed, and it took the form of a treble clef (sol key) that is used in our time.
3) French abbreviation. words gauche (left); used in the designation m. g., i.e. main gauche (left hand).
V. A. Vakhromeev.

Musical encyclopedia. - M.: Soviet encyclopedia, Soviet composer. Ed. Yu. V. Keldysh. 1973-1982.

E.g. This:

E.g.

e. g.(abbreviated from lat. exempli gratia- For example). In Russian, it is used, as a rule, in informal texts to reduce the typed characters. Valid spellings: eg, e. g.

GIS is not a class of software, but a whole set of components that form a single system (e. g. hardware and software, spatial data, algorithms for their processing, etc.).

You should eat more fiber foods, e.g. fruits, vegetables, bread.

see also

• List of Latin abbreviations
• i. e.
• P.S.
• Vice versa

Not to be confused with the USE.

Links

See translations and meanings in dictionaries:

Kuzmich291192

For any two bodies, the law of universal gravitation is valid. It states that the force with which two bodies of masses m1 and m2 are attracted is directly proportional to the product of their masses and inversely proportional to the square of the distance between them (the area of ​​application of the law for balls and point bodies), i.e.

F=G*m1*m2/r^2, where G=6.672*10^(-11) N*m^2/kg^2 - gravitational constant

Consider the planet Earth (of mass M) and some body (of mass m), which is in close proximity to the Earth (at a distance much less than the radius of the Earth). That is, the Earth and this body will interact with the force

This force will impart acceleration to the body. According to Newton's second law, we have:

a=G*M/r^2. Let's take r equal to the radius of the Earth. Substituting the value of G and the mass of the Earth, we get an acceleration approximately equal to

a=9.81 m/s^2. This value is denoted g and is called the acceleration of free fall. Those. about

If we approach the issue strictly, then g changes with a change in height, but these changes in height are so insignificant compared to the radius of our planet that this value of g is a constant near the earth's surface.

Timurovec

This symbol denotes the numerical value of the acceleration during free fall of the body. The explanation is pretty simple. If the body is placed at a certain height above the surface of the Earth and then released, due to the force of gravity, the body will begin to fall accelerating all the time, that is, gaining speed. The symbol g just describes the amount with which this speed will increase.

In life, we often come across this concept when it comes to overloading pilots or astronauts. They experience an overload of so much g. The rough value of this quantity is ten meters per second squared, or, more precisely, g \u003d 9.78 m / s²

Monster2114

The letter g in physics means: free fall acceleration. This value is equal to nine point eight meters per second squared. Only seconds are squared. To make it easier to solve the problem, this value is taken as ten integers.

Zolotynka

The small letter g in physics stands for free fall acceleration. Simply put, g is the acceleration that objects acquire when approaching the Earth. This value is not constant, it is slightly larger at the poles (since the radius of the Earth is smaller) and slightly smaller at the equator. The difference is less than 1%, and the approximate value is g=9.81 m/s^2.

dolphinica

In the system of units, G is 9.80665 m/s².

At the Earth's equator and at the poles, the values ​​are slightly different, but close to those indicated above, and the acceleration is always directed towards the center of the Earth.

This value depends on the height above sea level, from where the body falls and depends on the geographical latitude, from where the body falls.

Milonika

The acceleration of free fall is considered to be a value equal to nine point and eighty-one hundredth of a meter per second squared. This value is denoted by the letter "g". This value can change but very little, so it is customary to use 9.81 for calculations

mustard

In physics, the symbol g denotes the acceleration of free fall, since all bodies having different weight masses, but when falling, have the same acceleration, and always directed downward vertically. The g value is 9.81 m/s*2

Leona-100

G in physics means free fall acceleration. g=9.81 m/s^2. With a change in height, g may change, but these changes are so insignificant that this value of g near the earth's surface is taken as a constant (constant).

letter g In physics, it refers to the acceleration of free fall. In our latitudes g = 9.78 m / s², and in the equatorial region this value is 9.83 m / s².

Also, the magnitude of the acceleration of free fall depends on the height above sea level.

g or free fall acceleration is approximately equal to 9.8. In different regions of the planet Earth, it may differ. Also in the school curriculum and in the tasks of the exam, the acceleration of free fall is often rounded up to 10.

What does category G mean in movies?

Yerlan q

MPAA rating system
1. What is the MPAA rating?
The Motion Picture Association of America (MPAA) is the originator of a rating system that helps parents evaluate whether certain films are suitable for their children to watch.
The current MPAA rating system is as follows:
Rated G - No age limit
Rated PG - Parental attendance recommended
Rated PG-13 - Not suitable for children under 13
Rated R - Persons under 17 must be accompanied by an adult
Rated NC-17 - Under 17s not allowed to view
http://www.kinopoisk.ru/level/38/#mpaa

In my phone, instead of the usual Internet sign "H", "G" and "E" also appear. What do they mean and what's the difference ?! ?

diy lobos

H-HSDPA-14.4 Mb/s; E -EDGE - 474 kb/s also called egprs; g- just gprs speed is even less ---- all these are different data transfer protocols over a cellular network with different speeds = these protocols are supported by your phone and depending on the external cellular equipment, your phone will show in which zone of the cellular network you are

The letter H means that the phone works in the HSDPA standard - the fastest data transfer mode
"G" is GPRS - the very first, the slowest.
"E" - This is EDGE, a faster data transfer technology than GPRS. Whether EDGE belongs to 2G or 3G networks depends on the specific implementation. While Class 3 and below EDGE phones are not compliant with 3G, Class 4 and above EDGE phones can theoretically provide higher bandwidth than other technologies advertised as 3G.

The appearance of different characters - an attempt by the phone in poor reception conditions to keep at least some channel (desc - H - E - G)

After studying the course of physics in the minds of the students are all sorts of constants and their values. The topic of gravity and mechanics is no exception. Most often, they cannot answer the question of what value the gravitational constant has. But they will always unequivocally answer that it is present in the law of universal gravitation.

From the history of the gravitational constant

Interestingly, there is no such quantity in Newton's work. It appeared in physics much later. To be more specific, only at the beginning of the nineteenth century. But that doesn't mean she didn't exist. It’s just that scientists didn’t define it and didn’t know its exact meaning. By the way, about the meaning. The gravitational constant is constantly refined, since it is a decimal fraction with a large number of digits after the decimal point, which is preceded by zero.

It is precisely the fact that this value takes on such a small value that explains why the action of gravitational forces is imperceptible on small bodies. Just because of this multiplier, the force of attraction turns out to be negligible.

For the first time, the physicist G. Cavendish established by experience the value that the gravitational constant takes. And it happened in 1788.

In his experiments, a thin rod was used. It was suspended on a thin copper wire and was about 2 meters long. Two identical lead balls 5 cm in diameter were attached to the ends of this rod. Large lead balls were placed next to them. Their diameter was already 20 cm.

When large and small balls approached, the rod turned. It spoke of their attraction. From the known masses and distances, as well as the measured twisting force, it was possible to find out quite accurately what the gravitational constant is equal to.

And it all started with the free fall of bodies

If bodies of different masses are placed in a void, they will fall simultaneously. Subject to their fall from the same height and its beginning at the same time. It was possible to calculate the acceleration with which all bodies fall to the Earth. It turned out to be approximately equal to 9.8 m / s 2.

Scientists have found that the force with which everything is attracted to the Earth is always present. Moreover, this does not depend on the height to which the body moves. One meter, kilometer or hundreds of kilometers. No matter how far away the body is, it will be attracted to the Earth. Another question is how its value will depend on the distance?

It was to this question that the English physicist I. Newton found the answer.

Reducing the force of attraction of bodies with their distance

To begin with, he put forward the assumption that the force of gravity is decreasing. And its value is inversely related to the distance squared. Moreover, this distance must be counted from the center of the planet. And did some theoretical calculations.

Then this scientist used the data of astronomers on the movement of the natural satellite of the Earth - the Moon. Newton calculated with what acceleration it revolves around the planet, and got the same results. This testified to the veracity of his reasoning and made it possible to formulate the law of universal gravitation. The gravitational constant was not yet in his formula. At this stage, it was important to identify the dependency. Which is what was done. The force of gravity decreases in inverse proportion to the squared distance from the center of the planet.

To the law of universal gravitation

Newton continued to think. Since the Earth attracts the Moon, then she herself must be attracted to the Sun. Moreover, the force of such attraction must also obey the law described by him. And then Newton extended it to all the bodies of the universe. Therefore, the name of the law includes the word "universal".

The forces of universal gravitation of bodies are defined as proportional to the product of masses and inverse to the square of the distance. Later, when the coefficient was determined, the formula of the law took the following form:

• F t \u003d G (m 1 * x m 2): r 2.

It contains the following designations:

The formula for the gravitational constant follows from this law:

• G \u003d (F t X r 2): (m 1 x m 2).

The value of the gravitational constant

Now it's time for specific numbers. Since scientists are constantly refining this value, different numbers were officially adopted in different years. For example, according to data for 2008, the gravitational constant is 6.6742 x 10 -11 Nˑm 2 /kg 2. Three years have passed - and the constant was recalculated. Now the gravitational constant is equal to 6.6738 x 10 -11 Nˑm 2 /kg 2. But for schoolchildren, in solving problems, it is permissible to round it up to such a value: 6.67 x 10 -11 Nˑm 2 /kg 2.

What is the physical meaning of this number?

If we substitute specific numbers into the formula that is given for the law of universal gravitation, then an interesting result will be obtained. In a particular case, when the masses of bodies are equal to 1 kilogram, and they are located at a distance of 1 meter, the force of gravity turns out to be equal to the very number that is known for the gravitational constant.

That is, the meaning of the gravitational constant is that it shows with what force such bodies will be attracted at a distance of one meter. The number shows how small this force is. After all, it is ten billion less than one. She can't even be seen. Even if the bodies are magnified a hundred times, the result will not change significantly. It will still remain much less than unity. Therefore, it becomes clear why the force of attraction is noticeable only in those situations if at least one body has a huge mass. For example, a planet or a star.

How is the gravitational constant related to free fall acceleration?

If we compare two formulas, one of which will be for gravity, and the other for the law of gravity of the Earth, we can see a simple pattern. The gravitational constant, the mass of the Earth, and the square of the distance from the center of the planet make up a factor that is equal to the acceleration of free fall. If we write this in a formula, we get the following:

• g = (G x M) : r 2 .

Moreover, it uses the following notation:

By the way, the gravitational constant can also be found from this formula:

• G \u003d (g x r 2): M.

If you want to know the acceleration of free fall at a certain height above the surface of the planet, then the following formula will come in handy:

• g \u003d (G x M): (r + n) 2, where n is the height above the Earth's surface.

Problems that require knowledge of the gravitational constant

Task one

Condition. What is the acceleration of free fall on one of the planets of the solar system, for example, on Mars? It is known that its mass is 6.23 10 23 kg, and the radius of the planet is 3.38 10 6 m.

Decision. You need to use the formula that was written for the Earth. Just substitute in it the values ​​given in the task. It turns out that the acceleration of gravity will be equal to the product of 6.67 x 10 -11 and 6.23 x 10 23, which then needs to be divided by the square 3.38 10 6 . In the numerator, the value is 41.55 x 10 12. And the denominator will be 11.42 x 10 12. The exponents will decrease, so for the answer it is enough to find out the quotient of two numbers.

Answer: 3.64 m/s 2 .

Task two

Condition. What should be done with bodies to reduce their force of attraction by 100 times?

Decision. Since the mass of bodies cannot be changed, the force will decrease due to their removal from each other. A hundred is obtained by squaring 10. This means that the distance between them should become 10 times greater.

Answer: move them to a distance greater than the original 10 times.

Quite often, people read English-language forums, but sometimes ignorance of individual jargon or abbreviations can "break" the understanding of the entire message. To prevent this from happening to you, we have made a separate category, where we will include transcripts of the most popular foreign words and terms. So do not forget to bookmark us, we will have a lot of interesting information. In this article we will talk about such a mysterious letter as G, decoding and translation you will learn a little lower.
However, before continuing, I would like to advise you to read a couple more popular news on the subject of foreign slang. For example, what does Crib mean, translation Dawg, what does Coming Soon mean, what is Very nice, etc.
So let's continue what does g mean translation? This letter has several meanings, we will analyze the most popular of them.

G- short form of the word "gangsta"

Example:

in Thug"z Mansion you gotta be a G (?)

Yo, he a real G, he had the hood shook. (Yo, he's a real G, in his hood)

G is an abbreviation for the word "grand", that is, 1000 US dollars

Example:

Cost a nigga a hundred G"z (Big Syke - Picture Me Rollin") (?)

G- a word used to call someone who doesn't know their name, such as in a taxi

Example:

Yo, G, to 21st street (Hello Ji, to 21st street).

G- a word used by a close friend to express their affection "endearment" (la de da fancy word, lol)

Example:

That "s it, G! (That's it, Gee!).

Don "t front Lorenzo, he my G. (?)

"G" optionally refers to " gansta". In Queens, among the people I know, "G" is mostly guys who have their own "shit together" (that is, they are organized, know what they want, etc.) or it is someone who lucky in life.
This is a person who looks good, is in good shape, smart, has money, is polite to men and women, is well dressed, etc. These are called " G.". So most hip hop/gangster communities aren't "G" at all due to lack of brains, money, social skills, class, style, etc.
Lil Wayne can't be considered a "G" (due to not being successful in every aspect of life, eg inability to behave properly, his low intelligence, etc.).

Jay Z is "G" (high quality lyrics, money, Beyonce, style, class, etc.).

G is short for "GHB" or as it is also called gamma-hydroxybutyrate, a drug that causes alcohol intoxication, reduces inhibition and increases libido, also known as the "date-rape drug". A highly used drug in raves and nightclubs in the early to mid 90s. Known for its euphoric, sedative and anabolic effects.
Abuse of "G" can cause coma and seizures

G- short for "Glass" (crystal meth), a synthetic drug

Don't smoke G.

Most transcripts of words associated with "G" define it as "gansta" or something that is related to the culture " gansta".
However, the original use of "G" came from the divided sect "Nation of Islam" (Nation of Islam), this sect known as "5 percent nation" (5 percent nation). It was originally used to promote a belief in godliness or god (God) that could be reached from within and was used in the context of referring to members of the "5 percent nation", also known as the "nation of the gods". In this sense, the Wu-Tang hiphop group usually uses "G".

This is my "G" from the Universal Nation of Gods. (This is my "G" from the Universal Nation of Gods).

This religion identifies all black men (or others affiliated with the group) as their own god.

• "whattup g" (How are you G)
• "sup god" (Cool, god).

By reading this article, you have learned what does g mean translation, and you will no longer get into a quandary when you meet him in the text again.