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an ideal gas undergoes a single stage expansion against a constant opposing pressure from (P1,V1,T) to(P2,V2,T).what is the largest mass m which can be lifted through a height h in the expansion?the answer does nat have p ext ,so i am confused.

an ideal gas undergoes a single stage expansion against a constant opposing pressure from (P1,V1,T) to(P2,V2,T).what is the largest mass m which can be lifted through a height h in the expansion?the answer does nat have p ext ,so i am confused.

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3 Answers

Chetan Mandayam Nayakar
312 Points
9 years ago

work done=nRTln(V2/V1)=mgh

anushka shanbhag
4 Points
9 years ago

the answer is wrong.external pressure is constant so u cannot apply reversible process equation.

Sarthak Shrivastava
11 Points
3 years ago
askIITians your IITians have provided a wrong answer. The external pressure will be P2. Hope with this you will be able to solve with this information
 

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