Work

What is work ?

Work is done when a force displaces an object.
If a force is applied to an object and it is not displaced then no work is done.
i.e
If you push a broken down car and it does not move No Work Is Done, you may feel tired if you try this for 10 minutes, but according to the definition of work none has been done.

Mathematically

Work

 
W = F d cos θ
where
W
Work [Nm]
F
Force [N]
d
Displacement [m]
cos θ
Cosine of the angle between the applied force and the subsequent displacement. [No dimension]
No Example Created Yet.

Dimensionally

 
Work has dimensions of kg m2 s2.
Work is measured in units of Newton Meters or Nm, these are the same units as Energy.
Example Content

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