Thermodynamics Problem Solving | Example Problems on Work Transfer | Lecture-08

In this lecture, we solve important numerical problems on Work Transfer based on Energy Interactions in Thermodynamics. This video is highly useful for GATE Mechanical, JEE Mains, and NEET preparation. 📘 Concepts Covered: Energy Interactions Work and Heat Transfer Path Function & Point Function Work as a Path Function Thermodynamic Processes: Isobaric Process Isochoric Process Isothermal Process Adiabatic Process Polytropic Process 📊 Problems Discussed: Work done during inflation of a balloon from compressed helium Multi-process system (Isobaric + Adiabatic + Isothermal) – finding V₂ and net work Work done in a cyclic process represented on P-V diagram Work calculation for expansion in engine cylinder (linear P-V relation) 🎯 This video is useful for: GATE Mechanical Aspirants SSC JE Students JEE Mains & NEET Physics Students Mechanical Engineering Students #WorkTransfer #EnergyInteractions #ThermodynamicsProblems #GATEMechanical #GATE2026 #MechanicalEngineering #SSCJE #JEEMains #NEET #Thermodynamics #PathFunction #PointFunction #IsothermalProcess #AdiabaticProcess #PolytropicProcess #EngineeringStudents #ExamPreparation #NumericalProblems Gas from a bottle of compressed helium is used to inflate an inelastic flexible balloon, originally folded completely flat to a volume of 0.6 m3. If the barometer reads 760 mm Hg, what is the amount of work done upon the atmosphere by the balloon? Sketch the system before and after the process. A system undergoes three processes as shown in Fig. 1-2 is an Isobaric process, 2-3 is an adiabatic process with 𝜸 = 1.4, 3-1 is an Isothermal Process with PV=C . Find the value of V2 and also find the net work transfer An imaginary engine receives heat and does work on a slowly moving piston at such rates that the cycle of operation of 1 Kg of working fluid can be represented as a circle 10 cm diameter on P-V diagram which 1cm = 300 Kpa and 1 cm = 0.1 m3/Kg. Then find the net work during the cycle. An engine cylinder has a Piston area of 0.12 m2 and contains a gas at a pressure of 1.5 Mpa. The gas expands according to a process which is represented by a straight line on P-V diagram. The final pressure is 0.15 Mpa. Calculate the work done by the gas if the stroke length is 0.3 m.