Suppose
that a sample of gas expands from 2.0 to
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Solution: Click For PDF Version From the data we find the equation of the diagonal line. It is Work done on a gas is given by
Therefore, the work done on the gas along the diagonal (A to B) as shown in the figure will be
Work done along BC is zero as the change in pressure takes place at constant volume. The work done on the gas along CA, as it is compression at constant pressure, will be
Therefore, the total work done on the gas along the cyclic path ABCA will be
Work done on the gas along the path BD will be
Therefore, the total work done on the gas along the cyclic path ABDA will be
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along
the diagonal path as shown in the figure. It is then compressed back
to
either
along path 1 or along
path 2. We have to
compute the net work done on the gas for the complete cycle in each
case.
