(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Figure 8-17 shows one direct path and four indirect paths from pointito pointf. Along the direct path and three of the indirect paths, only a conservative force Fc acts on a certain object. Along the fourth indirect path, both Fc and a conservative force Fnc act on the object. The change in ME (in Joules) in going fromitofis indicated along each straight line segment of the indirect paths.

(a) what is change in ME in moving from i to f along the direct path

(b) what is change in ME due to Fnc along the one path where it acts.

This is a conceptual question but I don't get it.

2. Relevant equations

change in ME=change in K + change in U=0

3. The attempt at a solution

Change in ME should equal zero for conservative forces. But the diagram has a bunch of numbers that neither add up to zero or are 0.

http://i2.photobucket.com/albums/y25/keltix/fig8-17question1.jpg" [Broken]

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Change in mechanical energy

**Physics Forums | Science Articles, Homework Help, Discussion**