Physics

What are the S.I. and C.G.S. units of work? How are they related? Establish the relationship.

Work, Energy & Power

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Answer

The S.I unit of work is Joule.

C.G.S unit of work is erg.

Relation between joule and erg:

1 joule = 1N × 1m

As we know, 1 N = 105 dyne and 1 m = 102 cm

Therefore,

    1 joule = 105 dyne x 102 cm
⇒ 1 joule = 107 dyne cm
So, 1 joule = 107 erg.

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