Definition:Force

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Definition

A force is an influence which causes a body to undergo a change in velocity.

Force is a vector quantity.


Dimension

The dimension of measurement of force is $M L T^{-2}$.

This arises from Newton's Second Law of Motion and its definition as a mass (of dimension $M$) multiplied by an acceleration (of dimension $L T^{-2}$).


Units

The units of measurement of force are as follows:

$1 \ \mathrm N = 1 \ \mathrm{kg} \ \mathrm{m} \ \mathrm{s}^{-2}$
$1 \ \mathrm {dyn} = 1 \ \mathrm{g} \ \mathrm{cm} \ \mathrm{s}^{-2}$

Thus we see:

$1 \ \mathrm N = 10^5 \ \mathrm {dyn}$


Also see


Linguistic Note

The word force is derived from the Latin word fors meaning strength.


Sources