Information about Kilogram Force
The unit kilogram-force (kgf, often just kg) or kilopond (kp) is defined as the force exerted by one kilogram of mass in standard Earth gravity. Although the gravitational pull of the Earth varies as a function of position on earth, it is here defined as exactly 9.80665 m/s². So one kilogram-force is by definition equal to 9.80665 newtons.[1]
The kilogram-force has never been a part of the International System of Units (SI), which was introduced in 1960. The SI unit of force is the newton.
Prior to this, the unit was widely used in much of the world; it is still in use for some purposes. The thrust of a rocket engine, for example, was measured in kilograms-force in 1940s Germany, in the Soviet Union (where it remained the primary unit for thrust in the Russian space program until at least the late 1980s), and it is still used today in China and sometimes by the European Space Agency.
It is also used for tension of bicycle spokes, for torque measured in "meter-kilograms", for pressure in kilograms per square centimeter, for the draw weight of bows in archery, and to define the "metric horsepower" (PS) as 75 m·kgf/s.[1]
Grams-force and kilograms-force were never well-defined units until the CGPM adopted a standard acceleration of gravity of 980.665 cm/s² for this purpose in 1901, though they had been used in low-precision measurements of force before that time.
A tonne-force, metric ton-force, megagram-force, or megapond (Mp) is 1000 kilograms-force.
The decanewton (daN) is used in some fields as an approximation to the kilogram-force, being exactly rather than approximately 10 newtons.
In physics, the dyne (symbol "dyn") is a unit of force specified in the centimeter-gram-second
..... Click the link for more information.
..... Click the link for more information.
The kilogram-force has never been a part of the International System of Units (SI), which was introduced in 1960. The SI unit of force is the newton.
Prior to this, the unit was widely used in much of the world; it is still in use for some purposes. The thrust of a rocket engine, for example, was measured in kilograms-force in 1940s Germany, in the Soviet Union (where it remained the primary unit for thrust in the Russian space program until at least the late 1980s), and it is still used today in China and sometimes by the European Space Agency.
It is also used for tension of bicycle spokes, for torque measured in "meter-kilograms", for pressure in kilograms per square centimeter, for the draw weight of bows in archery, and to define the "metric horsepower" (PS) as 75 m·kgf/s.[1]
Grams-force and kilograms-force were never well-defined units until the CGPM adopted a standard acceleration of gravity of 980.665 cm/s² for this purpose in 1901, though they had been used in low-precision measurements of force before that time.
A tonne-force, metric ton-force, megagram-force, or megapond (Mp) is 1000 kilograms-force.
The decanewton (daN) is used in some fields as an approximation to the kilogram-force, being exactly rather than approximately 10 newtons.
| Newton (SI unit) | Dyne | Kilogram-force (Kilopond) | Pound-force | Poundal | |
| 1 N | ≡ 1 kgm/s | = 105 dyn | ≈ 0.10197 kp | ≈ 0.22481 lbf | ≈ 7.2330 pdl |
| 1 dyn | = 10−5 N | ≡ 1 gcm/s | ≈ 1.019710−6 kp | ≈ 2.248110−6 lbf | ≈ 7.233010−5 pdl |
| 1 kp | = 9.80665 N | = 980665 dyn | ≡ gn(1 kg) | ≈ 2.2046 lbf | ≈ 70.932 pdl |
| 1 lbf | ≈ 4.448222 N | ≈ 444822 dyn | ≈ 0.45359 kp | ≡ gn(1 lb) | ≈ 32.174 pdl |
| 1 pdl | ≈ 0.138255 N | ≈ 13825 dyn | ≈ 0.014098 kp | ≈ 0.031081 lbf | ≡ 1 lbft/s |
|
The value of gn as used in the official definition of the kilogram-force is used here for all gravitational units. | |||||
References
1. ^ Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 1995 p. 51 [1]
External link
In physics, force is an action or agency that causes a body of mass m to accelerate. It may be experienced as a lift, a push, or a pull. The acceleration of the body is proportional to the vector sum of all forces acting on it (known as net force or resultant force).
..... Click the link for more information.
..... Click the link for more information.
kilogram or kilogramme (symbol: kg) is the SI base unit of mass. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.
..... Click the link for more information.
..... Click the link for more information.
Mass is a fundamental concept in physics, roughly corresponding to the intuitive idea of "how much matter there is in an object". Mass is a central concept of classical mechanics and related subjects, and there are several definitions of mass within the framework of relativistic
..... Click the link for more information.
..... Click the link for more information.
Earth's gravity, denoted by g, refers to the attractive force that the Earth exerts on objects on or near its surface (or, more generally, objects anywhere in the Earth's vicinity).
..... Click the link for more information.
..... Click the link for more information.
The metre (or meter) per second squared is the SI derived unit of acceleration. It is a measure of magnitude and can be a scalar measure or, when associated with a direction, a vector, for example by having sign positive or negative.
..... Click the link for more information.
..... Click the link for more information.
The newton (symbol: N) is the SI derived unit of force, named after Sir Isaac Newton in recognition of his work on classical mechanics.
..... Click the link for more information.
Definition
A newton..... Click the link for more information.
International System of Units (abbreviated SI from the French Le Système international d'unités) is the modern form of the metric system.
..... Click the link for more information.
..... Click the link for more information.
The newton (symbol: N) is the SI derived unit of force, named after Sir Isaac Newton in recognition of his work on classical mechanics.
..... Click the link for more information.
Definition
A newton..... Click the link for more information.
A spoke is one of some number of rods radiating from the center of a wheel (the hub where the axle connects), connecting the hub with the round traction surface. The term originally referred to portions of a log which had been split lengthwise into four or six sections.
..... Click the link for more information.
..... Click the link for more information.
torque (or often called a moment) can informally be thought of as "rotational force" or "angular force" which causes a change in rotational motion. This force is defined by linear force multiplied by a radius.
The SI unit for torque is the newton meter (N m). In U.S.
..... Click the link for more information.
The SI unit for torque is the newton meter (N m). In U.S.
..... Click the link for more information.
Horsepower (hp) is the name of several non-metric units of power. The most occurring conversion of horsepower to watt goes 1 horsepower = 745.7 watts. In scientific discourse, the term "horsepower" is seen as inferior and is rarely used because of its various definitions and
..... Click the link for more information.
..... Click the link for more information.
The newton (symbol: N) is the SI derived unit of force, named after Sir Isaac Newton in recognition of his work on classical mechanics.
..... Click the link for more information.
Definition
A newton..... Click the link for more information.
Si, si, or SI may refer to (all SI unless otherwise stated):
In language:
..... Click the link for more information.
In language:
- One of two Italian words:
- sì (accented) for "yes"
- si
..... Click the link for more information.
- Dynes redirects here. For the president of the University of California system, see Robert C. Dynes.
In physics, the dyne (symbol "dyn") is a unit of force specified in the centimeter-gram-second
..... Click the link for more information.
A pound or pound-force (abbreviations: lb, lbf, or lbf) is a unit of force. Pound is also the name of a unit of mass. One pound-force is approximately equal to the gravitational force exerted on a mass of one avoirdupois pound on the
..... Click the link for more information.
..... Click the link for more information.
The poundal is a non-SI unit of force. It is a part of the foot-pound-second system of units, a coherent subsystem of English units introduced in 1879, and one of several specialized subsystems of mechanical units used as aids in calculations.
..... Click the link for more information.
..... Click the link for more information.
g-force (also g-load) is a measurement of an object's acceleration expressed in g's. It may also informally refer to the reaction force resulting from an acceleration, with the causing acceleration expressed in g's.
..... Click the link for more information.
..... Click the link for more information.
pound or pound-mass (abbreviations: lb, ℔, lbm, or sometimes in the United States: #) is a unit of mass (sometimes called 'weight' in everyday parlance) in a number of different systems, including English units, Imperial units, and United
..... Click the link for more information.
..... Click the link for more information.
1 foot =
SI units
0 m 0 mm
US customary / Imperial units
0 yd 0 in
A foot (plural: feet or foot;[1] symbol or abbreviation: ft or, sometimes, ′SI units
0 m 0 mm
US customary / Imperial units
0 yd 0 in
..... Click the link for more information.
The National Institute of Standards and Technology (NIST), known between 1901–1988 as the National Bureau of Standards (NBS), is a non-regulatory agency of the United States Department of Commerce. The institute's mission is to promote U.S.
..... Click the link for more information.
..... Click the link for more information.
This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
Herod_Archelaus
