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Homework Statement
Particle x is bounded to another particle P by force which is dependent on their distance 'r',the potential derived from this force is:
U(r) = a/r^3 - b/r^2
a,b>0
(a)how much energy is required to separate the particles?.
(b)suppose particle x has kinetic energy E,how close/far can he get relative to P?(no need to solve the equation,just write it)
The Attempt at a Solution
well actually I don't even have a clue on where to start.
for (a) my only thought is that I need to see what happens when r-->infinity.
but I don't know where to plug it,(the force,the potential energy)?
I really need some help
thanks