Question

What is the relation between SI and CGS unit of work?

Answer 1

1. The SI unit of work is Joule.
2. When a force of 1 N causes a displacement of 1 m in the direction of its application, the work done is said to be 1 Joule (J).
3. The CGS unit of work is erg.
4. When a force of 1 dyne causes a displacement of 1 cm in the direction of its application, the work done is said to be 1 erg. It is the CGS unit of work.

$$\begin{gathered} 1J=1N\times 1m \\ ={10}^{5}dyne\times 100cm \\ ={10}^{7}erg \end{gathered}$$