How to Calculate Work Done by a Gas in Thermodynamics?

[vijayramakrishnan]

Homework Statement

Please see the attached image

Homework Equations

pv=nRT

The Attempt at a Solution

i don't know how to calculate the work done by the gas in the question and i calculated the change in internal energy.

 

[Chestermiller]

This same exact problem appeared in Physics Forums a couple of months ago. Does anyone remember who the OP was or what the title was?

 

[vijayramakrishnan]

This same exact problem appeared in Physics Forums a couple of months ago. Does anyone remember who the OP was or what the title was?

i would be gratified if you could give me the link sir

 

[Chestermiller]

i would be gratified if you could give me the link sir

I just don't remember.

 

[ehild]

Work done on a spring by an ideal gas, involving piston and spring
posted by Titan97, Feb 8 2016
https://www.physicsforums.com/threads/thermodynamics-problem-involving-piston-and-spring.856157/
There was an other one, about work done by a gas on a spring.

https://www.physicsforums.com/posts/4283379/

 

[Chestermiller]

Work done on a spring by an ideal gas,
posted by Titan97, Feb 8 2016
https://www.physicsforums.com/threads/thermodynamics-problem-involving-piston-and-spring.856157/

You're wonderful!

 

[ehild]

It was only that I have much less posts than you, to search

 

[vijayramakrishnan]

thank you very much sir

 

[SammyS]

Work done on a spring by an ideal gas, involving piston and spring
posted by Titan97, Feb 8 2016
https://www.physicsforums.com/threads/thermodynamics-problem-involving-piston-and-spring.856157/
There was an other one, about work done by a gas on a spring.

https://www.physicsforums.com/posts/4283379/

And she comes through, again !

 

[vijayramakrishnan]

And she comes through, again !

yes sir this a question from iit jee exam 2015