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Kilograms of Mass vs. Kilograms of Force : Solving Math Problems
Kilograms of Mass vs. Kilograms of Force : Solving Math Problems
Published: 2013/01/14
Channel: eHowEducation
GRAVITATIONAL UNIT OF FORCE -   kg-f / kg-wt & g-f / g-wt
GRAVITATIONAL UNIT OF FORCE - kg-f / kg-wt & g-f / g-wt
Published: 2016/09/25
Channel: EDU MANTRA
Kilogram-force
Kilogram-force
Published: 2014/10/25
Channel: Audiopedia
Pound Force, Kilogram Force and Gravitational Constant - Applied Fluid Dynamics - Class 006
Pound Force, Kilogram Force and Gravitational Constant - Applied Fluid Dynamics - Class 006
Published: 2015/09/24
Channel: Chemical Engineering Guy
Kilogram-force per square centimetre
Kilogram-force per square centimetre
Published: 2015/10/09
Channel: Audiopedia
Pound force/KG force/KG Weight concepts TA0104
Pound force/KG force/KG Weight concepts TA0104
Published: 2017/11/04
Channel: Technical Atyachar
Measuring pull force
Measuring pull force
Published: 2013/10/19
Channel: Ultimate Handyman
Convertir de Pascal a kgf/cm2
Convertir de Pascal a kgf/cm2
Published: 2016/09/27
Channel: iEnciclotareas
How Do You Convert Newtons To Kilograms?
How Do You Convert Newtons To Kilograms?
Published: 2017/07/14
Channel: sparky SPARKS
mayana kolai champion reefs   KGF 2017(4)
mayana kolai champion reefs KGF 2017(4)
Published: 2017/02/27
Channel: prasanna kumar
Jain College KGF Digital Monitoring System
Jain College KGF Digital Monitoring System
Published: 2016/12/27
Channel: Navendran Dhanaraj
how to convert kg/cm2 to bar - pressure converter
how to convert kg/cm2 to bar - pressure converter
Published: 2015/02/02
Channel: Electrical videos
harassment of police in kgf
harassment of police in kgf
Published: 2014/12/03
Channel: Shoukath NASh
KGF
KGF
Published: 2015/07/10
Channel: Narasimhan k
test 1 750 kg force
test 1 750 kg force
Published: 2013/11/16
Channel: b4tack1000
KGF VTV|| KGF NEWS|| Swarna train to be changed from 1st OCT ||
KGF VTV|| KGF NEWS|| Swarna train to be changed from 1st OCT ||
Published: 2017/09/30
Channel: kgf vtv
KGF Gandhinagar Vilayat
KGF Gandhinagar Vilayat
Published: 2017/10/30
Channel: Step Hen
KGF VTV || KGF NEWS||  Stay on KGF development || Counter by
KGF VTV || KGF NEWS|| Stay on KGF development || Counter by
Published: 2017/10/02
Channel: kgf vtv
Birth Of KGF History
Birth Of KGF History
Published: 2017/03/12
Channel: Sampath kumar
KGF explosion shout out
KGF explosion shout out
Published: 2017/05/26
Channel: All about the Football
how to convert kg/cm2 to kg/m2 - pressure converter
how to convert kg/cm2 to kg/m2 - pressure converter
Published: 2015/02/06
Channel: Electrical videos
how to convert psi to kilogram per centimeter square kg/cm2 - pressure converter
how to convert psi to kilogram per centimeter square kg/cm2 - pressure converter
Published: 2015/02/08
Channel: Electrical videos
KGF Students Leaders & Friends on Rally for Rivers|| KGF VTV || KGF Short film
KGF Students Leaders & Friends on Rally for Rivers|| KGF VTV || KGF Short film
Published: 2017/09/23
Channel: kgf vtv
how to convert bar to kilogram per meter square - pressure converter
how to convert bar to kilogram per meter square - pressure converter
Published: 2015/01/27
Channel: Electrical videos
KG FORCE - Valparaiso
KG FORCE - Valparaiso
Published: 2016/02/25
Channel: DON KG FORCE
KGF Nation Intro
KGF Nation Intro
Published: 2017/09/10
Channel: KGF Nation
KG Force fumble
KG Force fumble
Published: 2009/02/10
Channel: Randall Gregory
KG FORCE - isla inocentes
KG FORCE - isla inocentes
Published: 2016/02/27
Channel: DON KG FORCE
169 GPT KGF
169 GPT KGF
Published: 2014/09/12
Channel: triveni jayaram
How Much Is A Newton Of Force?
How Much Is A Newton Of Force?
Published: 2017/07/21
Channel: blue sparky
KGF Shooting Spots video Small Jalak Exclusive
KGF Shooting Spots video Small Jalak Exclusive
Published: 2017/09/30
Channel: My designs A289
KGF FootBall Tournament Finals (2016)
KGF FootBall Tournament Finals (2016)
Published: 2016/04/29
Channel: iPhonekgf
Temple in k g f to vicky
Temple in k g f to vicky
Published: 2017/02/24
Channel: Vignesh Vickey
KGF to become a dumpyard of B
KGF to become a dumpyard of B'luru garbage? - NEWS9
Published: 2017/01/21
Channel: NEWS9
KGF Volleyball 2014 Finals in King George Hall
KGF Volleyball 2014 Finals in King George Hall
Published: 2014/03/03
Channel: iPhonekgf
Convertir de Kilogramo-Fuerza a Newton (Kgf a N)
Convertir de Kilogramo-Fuerza a Newton (Kgf a N)
Published: 2015/05/17
Channel: iEnciclotareas
KGF VTV NEWS UPDATES|| Pandaram Line road problem || Kanadasa janathi celebration
KGF VTV NEWS UPDATES|| Pandaram Line road problem || Kanadasa janathi celebration
Published: 2017/11/07
Channel: kgf vtv
Sad story of kgf swarna train
Sad story of kgf swarna train
Published: 2017/10/31
Channel: Diyaste Stefan
K G F PRAVEEN
K G F PRAVEEN
Published: 2017/09/10
Channel: Praveen Kumar
Kgf friends
Kgf friends
Published: 2017/10/02
Channel: Sunil Kumar M
The positive thing about life is what you do💨®KgF⏩
The positive thing about life is what you do💨®KgF⏩
Published: 2017/11/16
Channel: Dex porter
Movie of wild Deer in K G F
Movie of wild Deer in K G F
Published: 2010/06/27
Channel: kgfvideo
Gana Mix by mdpcs tv kgf
Gana Mix by mdpcs tv kgf
Published: 2017/11/07
Channel: MDPCS TV
KGF
KGF
Published: 2017/10/27
Channel: Sakkare Shivu
Yoppa ft Kg - Pressure
Yoppa ft Kg - Pressure
Published: 2017/03/13
Channel: 6ShxtMafiaMusik
KGF.........
KGF.........
Published: 2017/10/27
Channel: prajwal gowda
Kgf
Kgf
Published: 2017/10/20
Channel: Manoj Kumar
K  G  F
K G F
Published: 2017/09/04
Channel: Elakkiya R
KGF
KGF
Published: 2017/10/27
Channel: SK Tones
KGF
KGF
Published: 2017/10/09
Channel: Suresh Suri
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Kilogram-force
Unit system Gravitational metric system
Unit of Force
Symbol kgf 
Unit conversions
1 kgf in ... ... is equal to ...
   SI units    9.806650 N
   CGS units    980,665.0 dyn
   British Gravitational units    2.204623 lbf
   Absolute English units    70.93164 pdl

The kilogram-force (kgf or kgF), or kilopond (kp, from Latin pondus meaning weight), is a gravitational metric unit of force. It is equal to the magnitude of the force exerted by one kilogram of mass in a 9.80665 m/s2 gravitational field (standard gravity, a conventional value approximating the average magnitude of gravity on Earth).[1] Therefore, one kilogram-force is by definition equal to 9.80665 N.[2][3] Similarly, a gram-force is 9.80665 mN, and a milligram-force is 9.80665 µN. One kilogram-force is approximately 2.204622 pound-force.

Kilogram-force is a non-standard unit and is classified in SI Metric System as a unit that is unacceptable for use with SI.[4]

History[edit]

The gram-force and kilogram-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,[5] though they had been used in low-precision measurements of force before that time. 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 and 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.

The term "kilopond" has been declared obsolete[6] and should no longer be used.

It is also used for tension of bicycle spokes,[7] for informal references to pressure in kilograms per square centimeter (1 kp/cm2) which is the technical atmosphere (at) and very close to 1 bar and the standard atmosphere (atm), for the draw weight of bows in archery, and to define the "metric horsepower" (PS) as 75 metre-kiloponds per second.[2] In addition, kilograms force is the standard unit used for Vickers hardness testing.

Three approaches to metric units of mass and force or weight[8][9]
Base Force Weight Mass
2nd law of motion m = F/a F = Wa/g F = ma
System GM M CGS MTS SI
Acceleration (a) m/s2 m/s2 gal m/s2 m/s2
Mass (m) hyl kilogram gram tonne kilogram
Force (F),
weight (W)
kilopond kilopond dyne sthène newton
Pressure (p) technical atmosphere atmosphere barye pieze pascal

Related units[edit]

The tonne-force, metric ton-force, megagram-force, and megapond (Mp) are each 1000 kilograms-force.

The decanewton or dekanewton (daN) is used in some fields as an approximation to the kilogram-force, being exactly rather than approximately 10 newtons.

Units of force
newton
(SI unit)
dyne kilogram-force,
kilopond
pound-force poundal
1 N ≡ 1 kg⋅m/s2 = 105 dyn ≈ 0.10197 kp ≈ 0.22481 lbf ≈ 7.2330 pdl
1 dyn = 10−5 N ≡ 1 g⋅cm/s2 ≈ 1.0197 × 10−6 kp ≈ 2.2481 × 10−6 lbf ≈ 7.2330 × 10−5 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 lb⋅ft/s2
The value of gn as used in the official definition of the kilogram-force is used here for all gravitational units.

See also[edit]

References[edit]

  1. ^ The international system of units (SI)United States Department of Commerce, NIST Special Publication 330, 2008, p. 52
  2. ^ a b NIST Guide for the Use of the International System of Units (SI) Special Publication 811, (1995) page 51
  3. ^ BIPM SI brochure, chapter 2.2.2.
  4. ^ NIST Guide to the SI, Chapter 5: Units Outside the SI
  5. ^ Resolution of the 3rd CGPM (1901)
  6. ^ European Economic Community, Council Directive of 18 October 1971 on the approximation of the laws of the Member States relating to units of measurement (Directive 71/354/EEC), Annex, Chapter III.
  7. ^ Park Tool. "Balancing wheel tension with the TM-1 Spoke Tension Meter". Cyclingnews. Retrieved 2013-09-03. The recommended tension for spokes in bicycle wheels can be as low as 80 Kilograms force (Kfg) and as high as 230 Kilograms force. 
  8. ^ Comings, E. W. (1940). "English Engineering Units and Their Dimensions". Industrial & Engineering Chemistry. 32 (7): 984–987. doi:10.1021/ie50367a028. 
  9. ^ Klinkenberg, Adrian (1969). "The American Engineering System of Units and Its Dimensional Constant gc". Industrial & Engineering Chemistry. 61 (4): 53–59. doi:10.1021/ie50712a010. 

External links[edit]

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