Lecture d31. Linear harmonic oscillator Spring-Mass system k n Spring force F k>0 Newton's second Law m2+k:x=0 (Define) Natural frequency(and period) k 2丌 Equation of a linear harmonic oscillator +wnx=oLecture D31 : Linear Harmonic Oscillator Spring-Mass System Spring Force F = −kx, k > 0 Newton’s Second Law mx¨ + kx = 0 (Define) Natural frequency (and period) ωn = s k m  τ = 2π ωn  Equation of a linear harmonic oscillator x¨ + ω 2 nx = 0 1