Difference between revisions of "Work"

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-In [[physics]], work refers to the product of [[force]] and [[distance]] vectors
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-<ref>Serway and Beichner, ''Physics for Scientists and Engineers'', Fifth Edition</ref>.
-''W'' = F · d
-Or:
-''W'' = F d cos θ
-Where θ is the angle that separates the vectors. The second form of the equation is the expanded form of the "dot product" in the first equation. In physics, the dot product "a · b" (read "a dot b") can be rewritten as "a b cos θ".
-Work is a transfer of [[energy]]; if ''W'' is positive, there is a transfer of energy ''to'' the system, and if ''W'' is negative there is a transfer of energy ''from'' the system.
-Its units are that of force multiplied by distance, in SI this is [[newton (unit)|Newton]] · [[Meter]], or [[Joule]]
-==References==
-<references/>
-[[category:physics]]
-[[Category:Mechanics]]