According to the working formula W=FL

De: W= 12P0LS

Ⅱ. Let the kinetic energy when the piston leaves the cylinder be Ek, then:

EK= 12mv2

According to the law of conservation of energy:

△E=？ 12mv2？ 12 Boer

Answer: The work done to overcome atmospheric pressure in this process is12p0ls; ;

Can the gas in the cylinder be changed from the release of the piston to leaving the cylinder port? 12mv2？ 12POLS。