The potential energy of diatomic molecule is given by
U=A/r^12 - B/r^6
Where r is the separation of the two atoms of the molecule A and B are positive constants. This potential energy is associated with the force that binds the two atoms together.
a) Find the equilibrium separation- the distance between the atoms at wich the force on each atom is 0.
Is the force repulsive(pulled apart) or attractive if thir sseparation is:
b) smaller
c) larger than the equilibrium separation