Answer in Molecular Physics | Thermodynamics for Afraid #158582
Write down energy of vibration.
Recall that a system is conservative if energy is conserved, i.e. potential energy + kinetic energy = constant during motion.
1) Free vibration means that no time-varying external forces act on the system.
2) A system has one degree of freedom if its motion can be completely described by a single scalar variable. We’ll discuss this in a bit more detail later.
3) A system is said to be linear if its equation of motion is linear.