11. At the equilibrium position , the net restoring force vanishes. 12. Its unstable equilibrium position is obtained by rotating the figure 180?about a horizontal axis. 13. Once put into motion the block will oscillate back and forth around the equilibrium position . 14. Here " g " represents the equilibrium position . 15. "' Acoustic phonons "'are coherent movements of atoms of the lattice out of their equilibrium positions . 16. Moreover, the ions are not in fact stationary, but continually undergo thermal vibrations about their equilibrium positions . 17. When the Arm is hanging down in the stable equilibrium position \ theta _ 2 = 0. 18. For example, let us assume the equilibrium position sit somewhere on the rising slope of the resonance. 19. Due to the consistent vibration induced through thermal energy, they are permanently deviating from their equilibrium position . 20. On each bounce, the system is " trying " to return to its equilibrium position , but overshoots it.
