Work
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In physics, work refers to the product of force and distance vectors [1].
Or, its integral form:
Or:
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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 · Meter, or Joule
References
- ↑ Serway and Beichner, Physics for Scientists and Engineers, Fifth Edition
