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Work, Energy And Power

Question
CBSEENPH11017125

Derive the relation between different units of work.

Solution
Relation between joule and erg:
                   1 J = 1 Nm
                       equals space 10 to the power of 5 space dyne space cross times space 100 space cm
                       equals space 10 to the power of 7 space dyne space cm space equals space 10 to the power of 7 space ergs 
Relation between kg-m and g-cm:
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                          equals space 10 to the power of 5 straight g minus cm 
Relation between Joule and kg-m: 
            1 kg minus straight m equals 9.8 Nm equals 9.8 straight J 
Relation between erg and g-cm:
1 g–cm = 980dyne cm
            = 980 erg.