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| {{Use British (Oxford) English|date=January 2012}}
| | Alyson is the title individuals use to call me and I think it sounds fairly good when you say it. The preferred pastime for him and his kids is fashion and he'll be beginning some thing else along with it. Invoicing is what I do. For many years she's been residing in [http://modenpeople.co.kr/modn/qna/292291 tarot card readings] Kentucky but her telephone psychic; [http://www.aseandate.com/index.php?m=member_profile&p=profile&id=13352970 http://www.aseandate.com/index.php?m=member_profile&p=profile&id=13352970], husband wants them to transfer.<br><br>Here is my weblog ... clairvoyance ([http://formalarmour.com/index.php?do=/profile-26947/info/ http://formalarmour.com/index.php?do=/profile-26947/info]) |
| {{Unreferenced|date=December 2009}}
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| '''ISO 31-3''' is the part of [[international standard]] [[ISO 31]] that defines names and symbols for [[physical quantity|quantities]] and [[physical unit|units]] related to ''mechanics''. It is superseded by [[ISO 80000-4]].
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| Its definitions include (note boldfaced symbols mean quantity is a vector):
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| {| class="wikitable"
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| ! colspan="2" | Quantity
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| ! colspan="3" | Unit
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| ! rowspan="2" width="25%"| Remarks
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| |-
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| !Name||Symbol|||Name||Symbol||Definition
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| |-
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| |[[Force]]
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| |'''''F'''''
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| |[[Newton (unit)|newton]]
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| |N
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| |1 N = 1 kg·m/s<sup>2</sup>
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| |Unit named after [[Isaac Newton]]
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| |-
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| |[[Moment of force]], [[Torque]]
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| |'''''M''''', <math> \boldsymbol{\tau} </math>
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| |N·m
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| |1 N·m = 1 kg·m<sup>2</sup>/s<sup>2</sup>
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| |The unit is dimensionally equivalent to the units of energy, the joule; but the joule should not be used as an alternate for the newton metre.
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| |-
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| |[[Momentum|Linear momentum]]
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| |'''''p'''''
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| |kg·m·s or N·s
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| |-
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| |[[Impulse (physics)|(Linear) impulse]]
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| |'''''J'''''
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| |N·s or kg·m·s
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| |-
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| |[[Angular momentum]]
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| |'''''L'''''
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| |kg·m<sup>2</sup>·s or N·m·s
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| |-
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| |[[Mechanical energy]], [[Work (physics)|Work]]
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| |''E'', ''W''
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| |[[joule]]
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| |J
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| |1 J = 1 kg·m<sup>2</sup>/s<sup>2</sup> = 1 Pa·m<sup>3</sup> = 1 W·s
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| | Unit named after [[James Joule]]. The joule is dimensionally equivalent to the units of [[torque]] and [[moment of force]] but should be used in preference to the newton metre (N·m).
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| |-
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| |[[Power (physics)|Power]]
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| |''P''
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| |[[watt]]
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| |W
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| |1 W = 1 J/s = 1 N·m/s = 1 kg·m<sup>2</sup>/s<sup>3</sup>
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| |Unit named after [[James Watt]].
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| |-
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| |[[Pressure]]
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| |''p''
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| |[[Pascal (unit)|pascal]]
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| |Pa
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| |1 Pa = 1 N / m<sup>2</sup> = 1 kg/(m·s<sup>2</sup>)
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| |Named after [[Blaise Pascal]].
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| |-
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| |[[Stress (mechanics)|Normal stress]], Shear stress
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| |<math>\sigma, \tau </math>
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| |[[Pascal (unit)|pascal]]
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| |Pa
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| |1 Pa = 1 N / m<sup>2</sup> = 1 kg/(m·s<sup>2</sup>)
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| |Named after [[Blaise Pascal]].
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| |-
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| |colspan=6|...
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| |}
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| {{ISO standards}}
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| [[Category:ISO 31|#00031-3]]
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| {{Physics-stub}}
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| {{Standard-stub}}
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Alyson is the title individuals use to call me and I think it sounds fairly good when you say it. The preferred pastime for him and his kids is fashion and he'll be beginning some thing else along with it. Invoicing is what I do. For many years she's been residing in tarot card readings Kentucky but her telephone psychic; http://www.aseandate.com/index.php?m=member_profile&p=profile&id=13352970, husband wants them to transfer.
Here is my weblog ... clairvoyance (http://formalarmour.com/index.php?do=/profile-26947/info)