A spring of unstretched length l has a mass m with one end fixed to a rigid
support. Assuming spring to be rule ola
uniform wire, the kinetic energy possessed
by it if its free end is pulled with uniform
velocity v is

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= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation