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Consider a piston- cylinder arrangement ...

Consider a piston- cylinder arrangement with spring in its natural length. Due to heat transfer, the gas expands until the piston hits the stop. The mass of piston is `10kg` and area is `78cm^(2)`. Initial and final specific internal energies are 214 and `337kJ//kg`

A

Initial pressure of gas is `112k` Pa

B

Work done by gas on the piston is `56.5J`

C

Work done by gas on the piston is `100J`

D

Heat transfer for 0.5 gas is `118J`

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
Initially,
`P_("gas")=P_(0)A+mg=112.5kPa`
`w=int_(0)^(x)P_("gas")A dx`
`=int_(0)^(x)(P_(0)A+mg+kx)dx=56.5J`
`Q=m/_\u+w=118J`
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