- #1
Anza Power
- 10
- 0
Given the potential energy between two objects that is function of the distance between the two objects: u=a/r³ - b/r² (a,b>0)
I need to find where the object is in a resting state, and the energy require to completely separate the two objects...
The attempt at a solution
I went ahead and drew a graph for it:
I marked two points in the graph, B is the point when there is no restoring force correct? (as in if you put the object in that point it will not move)
The energy required to separate the two objects completely is U(∞)-u(r) correct?
So if the object was in a point before point A, all you need to do is let go and they'll blast off to infinity? (as in you don't need to put in work to separate them)
Another question (not in the exercise) if the graph looked like this:
For you to separate the two objects does that mean that you only need to get it a fraction beyond point c and they'll blast away from each other?
I need to find where the object is in a resting state, and the energy require to completely separate the two objects...
The attempt at a solution
I went ahead and drew a graph for it:
I marked two points in the graph, B is the point when there is no restoring force correct? (as in if you put the object in that point it will not move)
The energy required to separate the two objects completely is U(∞)-u(r) correct?
So if the object was in a point before point A, all you need to do is let go and they'll blast off to infinity? (as in you don't need to put in work to separate them)
Another question (not in the exercise) if the graph looked like this:
For you to separate the two objects does that mean that you only need to get it a fraction beyond point c and they'll blast away from each other?