- #1
fonseh
- 529
- 2
Homework Statement
both of these notes are in the same chapter . So , they are relevant to each other ... In the first picture, what's the difference between the 2 circled part ? The first one is W = 0.5 P Δ , the second one is W = P Δ..
Homework Equations
The Attempt at a Solution
For the second picture , I think we should use W = 0.5 P Δ instead of W = P Δ ..
(For the external work, the author use 1Δ , so 1 = P so , it's clear that the author use W = P Δ and not W = 0.5 P Δ)
I think W = 0.5 P Δ is more appropriate because W = force x displacement , which is also area under the graph ... Since the area under the graph is triangle , so 0.5 is necessary [/B]