Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A piston of mass 
is connected to a spring of spring constant 
and is placed inside a vertical cylinder containing an ideal gas. The system is heated with a coil and in equilibrium at temperature 
, and the spring is compressed by a distance 
from its natural length. Assuming the piston is frictionless and the external pressure is negligible, which of the following expressions correctly relates the gas pressure 
inside the cylinder?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Since the piston is at rest:
Upward forces=Downward forces
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