Hi can anyone explain in the simplest terms why for the lennard jones potential (or just potential energy in general??), a positive force implies repulsion between particles and vice versa? where Force= -del(Potential)
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Lennard Jones potential watch
- Thread Starter
- 14-10-2013 19:06
- 14-10-2013 19:43
It's just convention: positive force = repulsion, negative force = attraction.
(think of it another way, F = ma, so if you put one particle at the origin, then the other particle will decrease its x coordinate if the force is attractive and increase it if the force is repulsive)