define joule and erg
Answers
Explanation:
The erg is a unit of energy equal to 10−7 joules. It originated in the centimetre–gram–second (CGS) system of units. It has the symbol erg. The erg is not an SI unit. Its name is derived from ergon (ἔργον), a Greek word meaning work or task.
hi mate,
we know that the Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre.
The erg is the cgs unit of work/energy and Joule is MKS/ SI unit of the same.
By definition, 1 erg is the work done when a force of one dyne produces a displacement of 1 cm in an object in the direction of the force.
And one dyne is that force which produces an acceleration of 1 cm/s² in an object of 1 gm.
i hope it helps you.