Physics
Energy

When do you say that the work done is positive or negative?

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2012-02-28 14:27:17
2012-02-28 14:27:17

There are different conventions as to what work is negative and what work is positive. The convention used by engineers and physicists is that work done BY the system on its surroundings is positive while work done ON the system by its surroundings is negative. Chemists reverse these conventions.

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