Definition:Energy

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Definition

Energy is a property of physical bodies which can be defined as the ability to do work.

Like time, it is difficult to define exactly what energy actually is.


Symbol

The usual symbol used to denote the energy of a body is $E$.


Dimension

The dimension of measurement of energy is $\mathsf {M L^2 T^{-2} }$.

This derives from its definition as:

${\text{Force} } \times {\text {Distance} }$


Unit

The SI unit of measurement of energy is the joule.

The CGS unit of measurement of energy is the erg.

The FPS unit of measurement of energy is the foot-poundal.


Also see

  • Results about energy can be found here.


Sources