Mechanical work

In Newtonian mechanics, work ismeasureenergy expendedapplying force overdistance.

Formotion ofbody againstconstant force, work can be expressed as:

W = F · d (dot product)

where

• W : work (energy)
• F : force
• d : distance moved

In modern physics,term energygenerally usedreferall formsenergy, including mechanical work.

The SI derived unitwork isJoule. Other units includeerg,foot-pound, andfoot-poundal.