User:Milton Beychok/Sandbox2: Difference between revisions

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A '''kilogram-force''' ('''kgf''') is a unit of [[force]] equal to the force exerted on one [[kilogram]] of [[mass]] by [[standard gravity]] (&thinsp;''g<sub>n</sub>''&thinsp;), a standardized value representing the average magnitude of [[Acceleration due to gravity|gravitational acceleration]] on [[Earth|Earth's]] surface.<ref name=NIST-gravity/> Therefore, one kilogram-force is by definition equal to 9.80665 [[newton (unit)|newtons]].<ref name=NIST-newton/>
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The kilogram-force was not very well defined until the 3rd [[General Conference on Weights and Measures]] (Conférence Générale des Poids et Mesures, CGPM) defined the standard gravity,''g<sub>n</sub>'', to be 9.80665 m/s<sup>2</sup>. Although it was once widely used, it has never been part of the [[International System of Units]] (SI) introduced in 1960 by the
 
 
==References==
{{Reflist|refs=
 
<ref name=NIST-gravity>[http://physics.nist.gov/Pubs/SP330/sp330.pdf The International System of Units (SI), NIST Special Publication 330, 2008 Edition] (pdf page 57 of 77 pdf pages)</ref>
 
<ref name=NIST-newton>[http://physics.nist.gov/Pubs/SP330/sp330.pdf The International System of Units (SI), NIST Special Publication 330, 2008 Edition] (pdf page 30 of 77 pdf pages)</ref>
 
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*[http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf Bureau International des Poids et Mesures] (Brochure on SI, pdf page 51 of 88 pdf pages) From the website of the [[Bureau International des Poids et Mesures]]

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