Force, Work, Power and Energy — Physics STD 10 — Question
ICSE BoardEnglish MediumSTD 10PhysicsForce, Work, Power and Energy3 Marks
Question
State the $C.G.S$. unit of work. How it is related to its S.I. unit?
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Answer
The C.G.S. unit of work is erg. $1 erg =1$ dyne $\times 1 cm$.
The S.I. unit of work is the joule. 1 joule $=1$ Newton $\times 1$ metre
Relationship: $1 J=1 N \times 1 m$
$=10^5$ dyne $\times 100 cm=10^7$ erg.
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