A system containing m = 5 kg of a liquid is stirred with a torque of = 0.3 kgf-m at a speed of v= 1000 RPM for t = 24 hr. The system meanwhile expands from V1 = 1 m3 to V2 = 2 m3 against a constant pressure of p = 4 kgf/cm2. Determine the net work done and compute the stirrer work done by the system, in MJ.