Nitrogen gas $($N$2)$ contained in a piston$-$cylinder assembly undergoes an expansion process until it reaches a stop at V$2,$ p$3($see Figure$)$ and continues to increase the pressure up to p$3,$ starting from p$1=1$ bar, V$1=0\mathrm{.}1$ m$3.$ The entire process ends at p$3=2$ bar. While the piston moves, i$.$e$.,$ process $1-2,$ the process follows the pressure$-$volume relationship of pV $=$ constant. The cylinder has the stop at the volume of V$2=0\mathrm{.}4$ m$3.$ Kinetic and potential energy. What is the work for process $2-3,2$W$3$ in kJ