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Since work done W = F.S, its units are force times length. The SI unit of work is Newton-meter (Nm). Another name for it is Joule (J).

 1 Nm = 1 J

 The unit of  work in cgs system is dyne cm or erg

 Note that 1 J = 107 ergs.

 The dimensional formula of work is [ML2T-2]

 

Table 1:

System

Unit of work

Name of the combined unit

SI

Newton meter (Nm)

Joule

cgs

Dyne centimeter (dyne-cm)

Erg