In a steam engine the pressure P  and volume V  of steam satisfythe equation P V 1.4 = k  , where is a constant. (This istrue for adiabatic expansion, that is, expansion in whichthere is no heat transfer between the cylinder and its sur -roundings.) Use Exercise 19 to calculate the work done bythe engine during a cycle when the steam starts at a pressureof 160 lb/ sq m in and a volume of 100 cu . m  in and expands to a volumeof 800 cu . m

In a steam engine the pressure P  and volume V  of steam satisfy
the equation P V ^1.4 = k  , where is a constant. (This is
true for adiabatic expansion, that is, expansion in which
there is no heat transfer between the cylinder and its sur -
roundings.) Use Exercise 19 to calculate the work done by
the engine during a cycle when the steam starts at a pressure
of 160 lb/ sq m in and a volume of 100 cu . m  in and expands to a volume
of 800 cu . m