PV graph question (trying to determine the work)

[adam878787878]

Homework Statement

Look at the PV diagram of a system above. (attached) The units for P and V are atmospheric pressure atm and liter L. Process A to B and B to C are straight lines on it.
How much is the work done by the system from A to C in J?

Homework Equations

i know that work is the area under the graph, but when i add up areas, answer is wrong for some reason??

The Attempt at a Solution

W = .5(4*3) + .5(4*1.5) * 152J
= 1596J

this is wrong though
?

 

[physixguru]

>>>>Work Done is...[ p*delta V] i.e. pressure multiplied by CHANGE IN VOLUME.

This is enough for a hint...^^^

 

[Moetasim]

I would first ask for clarification on the units being used in the question. The units for pressure and volume should be consistent in order to accurately calculate the work. Additionally, I would suggest using the appropriate formula for calculating work, which is W = PΔV. It is important to ensure that the units are converted correctly and that the values used in the calculation are accurate. It is also possible that the incorrect answer could be due to a mistake in plotting the graph or incorrectly determining the boundaries of the area under the graph. I would recommend double-checking the calculations and seeking help from a peer or instructor if needed.