Thermodynamics - Work done by Moving Boundary (QUESTION)
This is for a piston in a cylinder.
Why does path B (compression) require more work than path A (expansion)?
Why does path B (compression) require more work than path A (expansion)?
(edited 10 years ago)
The integral of pdV is mathematically the area under the curve in the pV diagram.
Bigger area means more work.
Intuitively dV (change in volume) is the same in both cases but the average pressure is greater in path B so you would expect pdV to be greater for path B. Yes?
Bigger area means more work.
Intuitively dV (change in volume) is the same in both cases but the average pressure is greater in path B so you would expect pdV to be greater for path B. Yes?
Original post by Stonebridge
The integral of pdV is mathematically the area under the curve in the pV diagram.
Bigger area means more work.
Intuitively dV (change in volume) is the same in both cases but the average pressure is greater in path B so you would expect pdV to be greater for path B. Yes?
Bigger area means more work.
Intuitively dV (change in volume) is the same in both cases but the average pressure is greater in path B so you would expect pdV to be greater for path B. Yes?
That makes sense now. Thanks
Quick Reply
Related discussions
- Official thread - January 2023 IAL edexcel
- A-level Physics Study Group 2022-2023
- Natural sciences
- Help with personal statement for chemical engineering
- Thermodynamics question
- Thermodynamics Year 2 help
- Keep Your Ion The Prize | Shyleen’s Second Year University GYG | 2023 - 2024
- Edexcel A Level Further Mathematics Paper 3C (9FM0 3C) - 14th June 2023 [Exam Chat]
- Bmo 2023/24
- GCSE grade boundaries
- reuben's y13/medapps journey!!
- Chemistry vs chemical engineering
- what to do for chemical engineering personal statement
- How to get an A* in Politics?
- Edexcel A Level Physics Advanced Physics II 9PH0 02 - 9th June 2023 [Exam Chat]
- My story on how I failed English Language!
- last year of sixth form ahhhhhhhhhh
- Personal statement help for biological natural sciences
- OCR A A-level Physics Paper 1 Modelling Physics (H556/01) - 24th May 2023 [Exam Chat]
- Request remarking A-Level Maths OCR
Latest
Last reply 1 minute ago
what is the 5 marker (practical question) of ocr as chemistry 2023 was onLast reply 2 minutes ago
Haven't heard back from LSELast reply 3 minutes ago
If I am withdrawn from my university/course will I have to immediately pay back loan?Last reply 3 minutes ago
UAL Bsc Fashion Management and fashion marketingLast reply 5 minutes ago
JK Rowling in ‘arrest me’ challenge over hate crime lawLast reply 6 minutes ago
Government Social Research - Research Officer Scheme 2024Last reply 8 minutes ago
yet to receive a woodhouse interviewLast reply 9 minutes ago
Inlaks, Commonwealth, and Other Scholarships for Indian Students 2024: ThreadPosted 10 minutes ago
Are there any good sixth forms/sixth form colleges with applications still open?Last reply 10 minutes ago
Official Cambridge Postgraduate Applicants 2024 ThreadLast reply 11 minutes ago
Oxford Economics Degree ApprenticeshipLast reply 11 minutes ago
Student Finance for non-UK/EEA spouse of UK NationalLast reply 13 minutes ago
BAE systems degree apprenticeships September 2024Last reply 14 minutes ago
Edexcel A Level Mathematics Paper 1 (9MA0 01) - 4th June 2024 [Exam Chat]Last reply 15 minutes ago
Amazon Apprenticeships 2024Last reply 16 minutes ago
Official Royal Veterinary College Applicant Thread for 2024Last reply 21 minutes ago
Anyone else applying/has applied to UCL's Robotics and AI MEng course??
