menu
bartleby
search
close search
Hit Return to see all results

When gas expands in a cylinder with radius r, the pressure P at any given time is a function of the volume V: P = P(V). The force exerted by the gas on the piston (see the figure) is the product of the pressure and the area: F = πr2P. The work done by the gas when the volume expands from volume V1 to volume V2 is W =  v1 ꭍ v2 P dVIn a steam engine the pressure and volume of steam satisfy the equation PV1.4 = k, where k is a constant. (This is true for adiabatic expansion, that is, expansion in which there is no heat transfer between the cylinder and its surroundings.) Calculate the work done by the engine during a cycle when the steam starts at a pressure of 140 lb/in2 and a volume of 500 in3 and expands to a volume of 900 in3. (Round your answer to two decimal places.)  W = _________________ ft-lb

Question

When gas expands in a cylinder with radius r, the pressure P at any given time is a function of the volume V: P = P(V). The force exerted by the gas on the piston (see the figure) is the product of the pressure and the area: F = πr2P. The work done by the gas when the volume expands from volume V1 to volume V2 is 

W v1v2 P dV

In a steam engine the pressure and volume of steam satisfy the equation PV1.4 = k, where k is a constant. (This is true for adiabatic expansion, that is, expansion in which there is no heat transfer between the cylinder and its surroundings.) Calculate the work done by the engine during a cycle when the steam starts at a pressure of 140 lb/in2 and a volume of 500 in3 and expands to a volume of 900 in3. (Round your answer to two decimal places.)  W = _________________ ft-lb

 

check_circleAnswer
Step 1

Calculation:

From the given information, PV1.4 = k , P = 140 lb/in2 , V1 = 500 in3 and V1 = 900 in3

Compute the value of k as...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in

Math

Calculus

Other

Sorry about that. What wasn’t helpful?