Question

A aerodynamically system undergoes cyclic process ABCDA as shown in figure.Then work done during the process is:

• A. zero
• B. ${2P}_0{V}_0$
• C. $P_0{V}_0$
• D. ${\frac{3}{2}P}_0{V}_0$

Answer 1

The correct option is A zero

Work done for $P-V$ graph$=$ Area under the $P-V$ curved

From the given figure,

$W_{BCOB}=-\frac{P_0{V}_0}{2}$

$W_{AODA}=\frac{P_0{V}_0}{2}$

Total work done, $W_t=W_{BCOB}+W_{AODA}$

$W_t=-\frac{P_0{V}_0}{2}+\frac{P_0{V}_0}{2}$

$W_t=0$

The correct option is A.