Difference between revisions of "Work"
Jump to navigation
Jump to search
(Some fairly big changes.) |
|||
| Line 3: | Line 3: | ||
''W'' = F · d | ''W'' = F · d | ||
| + | |||
| + | Or: | ||
| + | |||
| + | ''W'' = F d Cosθ | ||
| + | |||
| + | Where θ is the angle that separates the vectors. | ||
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. | 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. | ||
Revision as of 12:57, October 17, 2007
In physics, work refers to the product of force and distance vectors [1].
W = F · d
Or:
W = F d Cosθ
Where θ is the angle that separates the vectors.
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