Two identical atoms of mass m having potential energy of interaction given by the lennard-jones formula, φ(r) 4ε σ/r)2 being momentarily disturbed by an encounter with a third particle, the original two oscillate about their equilibrium separation. use newton's law of motion, and find the displacement as a function of time (hint: (1) if consider one of the atoms as the reference, a "reduced mass" is needed when expressed by newton's law. (2) use a taylor expansion of φ about the equil. position, and take appropriate terms.)