|
|
| Line 1: |
Line 1: |
| The '''slug''' is a unit of [[mass]] associated with [[Imperial units]]. It is a mass that accelerates by 1 ft/s<sup>2</sup> when a force of one [[pound-force]] ({{lbf}}) is exerted on it.
| | Hi there, I am Alyson Boon even though it is not the title on my beginning certification. Distributing production is how he makes a residing. For many years she's been residing in Kentucky but her spouse desires them to move. The preferred pastime for him and his kids is to play lacross and he would never give it up.<br><br>Here is my website: online reader ([http://www.atvriders.tv/uprofile.php?UID=292609 try this www.atvriders.tv]) |
| | |
| <math>1\,\text{slug} =1\,\frac{\text{lb}_F\cdot\text{s}^2}{\text{ft}}
| |
| \qquad\Longleftrightarrow\qquad
| |
| 1\,\text{lb}_F = 1\,\frac{\text{slug}\cdot\text{ft}}{\text{s}^2}</math>
| |
| | |
| One slug has a mass of {{val|32.17405|u=lbm}} or {{val|14.593903|u=kg}} based on [[standard gravity]], the [[Foot (unit)#International_foot|international foot]], and the [[Pound (mass)#Avoirdupois_pound|avoirdupois pound]].<ref name=Shigley>Shigley, Joseph E. and Mischke, Charles R. ''Mechanical Engineering Design'', Sixth ed, pp. 31–33. McGraw Hill, 2001. ISBN 0-07-365939-8.</ref> At the surface of the Earth, an object with a mass of 1 slug exerts a force of about {{val|32.17|u=lbf}} or {{val|143|u=N}}.<ref>Beckwith, Thomas G., Roy D. Marangoni, et al. ''Mechanical Measurements'', Fifth ed, pp. 34-36. Addison-Wesley Publishing, 1993. ISBN 0-201-56947-7.</ref><ref name=Shevell>Shevell, R.S. ''Fundamentals of Flight'', Second ed, p. xix. Prentice-Hall, 1989.</ref>
| |
| | |
| == History ==
| |
| The ''slug'' is part of a subset of units known as the [[foot-pound-second system#force|gravitational FPS system]], one of several such specialized systems of mechanical units developed in the late 19th and the 20th century. ''Geepound'' was another name for this unit in early literature.<ref>[http://www.unit2unit.eu/lb_gee.html ]. unit2unit.eu</ref>
| |
| | |
| The name "slug" was coined before 1900 by British physicist [[Arthur Mason Worthington]],<ref>{{cite book |author = Worthington, Arthur Mason |title = Dynamics of Rotation: An Elementary Introduction to Rigid Dynamics |publisher = Longmans, Green, and Co. |year = 1900 |edition = 3rd |page = 9 |url = http://www.archive.org/stream/dynamicsofrotati00wortuoft#page/8/mode/2up}}</ref> but it did not see any significant use until decades later. A 1928 textbook says: {{quote|text=No name has yet been given to the unit of mass and, in fact, as we have developed the theory of dynamics no name is necessary. Whenever the mass, ''m'', appears in our formulae, we substitute the ratio of the convenient force-acceleration pair ''(w/g)'', and measure the mass in lbs. per ft./sec.<sup>2</sup> or in grams per cm./sec.<sup>2</sup>.|source=Noel Charlton Little, ''College Physics'', Charles Scribner’s Sons, 1928, p. 165.}}
| |
| | |
| {{GravEngAbs}}
| |
| | |
| The slug is listed in the "Regulations under the Weights and Measures (National Standards) Act, 1960". This regulation defines the units of weights and measures, both regular and metric, in Australia.
| |
| | |
| == Similar units ==
| |
| The ''blob'' is the [[inch]] version of the slug (1 blob = 1 lb<sub>f</sub>·s<sup>2</sup>/in = 12 slugs)<ref name=Shigley/> or equivalent to 175.126 kg. This unit is also called ''slinch'' (a [[portmanteau]] of the words slug and inch).<ref>[http://www.diracdelta.co.uk/science/source/s/l/slug/source.html Slug]. DiracDelta Science & Engineering Encyclopedia </ref><ref name=Wolframblob>{{cite web |title=1 blob |url=http://www.wolframalpha.com/input/?i=1+blob&lk=1 |work=Wolfram Alpha Computational Knowledge Engine |accessdate=27 October 2011}}</ref> Slang terms include ''slugette'',<ref>Celmer, Robert. ''Notes to Accompany Vibrations II''. Version 2.2. 2009.</ref> and a ''snail''.<ref>[http://www.unc.edu/~rowlett/units/dictS.html]</ref>
| |
| | |
| Metric units include the "glug" in the [[centimetre-gram-second system]], and the "mug", "par", or "MTE" in the [[metre-kilogram-second system]].<ref>{{cite book |last=Cardarelli |first=François |title=Scientific Units, Weights and Measures |pages=358, 377 |year=1999 |publisher=Springer |isbn=1-85233-682-X}}</ref>
| |
| | |
| == References ==
| |
| {{Reflist|1}}
| |
| | |
| ==External links==
| |
| * [http://hyperphysics.phy-astr.gsu.edu/hbase/mechanics/slug.html "What is a Slug?" on phy-astr.gsu.edu]
| |
| | |
| [[Category:Imperial units]]
| |
| [[Category:Units of mass]]
| |
Hi there, I am Alyson Boon even though it is not the title on my beginning certification. Distributing production is how he makes a residing. For many years she's been residing in Kentucky but her spouse desires them to move. The preferred pastime for him and his kids is to play lacross and he would never give it up.
Here is my website: online reader (try this www.atvriders.tv)