Question

What is the unit of moment of force in the SI and CGS systems?

Answer 1

Moment of force:

1. Moment of force is the tendency of force that causes a body to rotate about a specific axis. The momentum of force is the product of force and perpendicular distance from the line of the action.
2. The measurement of the turning effect is known as torque $\left(\tau \right)$.
3. Mathematically, it can be represented as $\tau =F\times d$, where $F$ is the force applied and $d$ is the distance from the fixed axis.

An illustrative diagram of the moment of force is given below.

Unit of the moment of force:

1. The SI unit of moment of force is Newton-meters $\left(\mathrm{N}‐\mathrm{m}\right)$.
2. In the CGS system, the unit of moment of force is dyne-centimeter $\left(\mathrm{dyne}‐\mathrm{cm}\right)$.
3. The dimension of the moment of force is $\left[\begin{array}{cc}M& L^2{T}^{-2}\end{array}\right]$.