Harmonic Motion

Harmonic Motion

It takes force to stretch or compress a spring. The spring tends to resist the force with an opposite reaction. A Spring being compressed and uncompressed is an example of Hooke's Law and Harmonic Motion. There are strong springs and weak springs. The amount of compression per unit force is given by the Spring Constant, k:
F = k x, where x is the displacement
The oscillations of a swing or pendulum exhibit SHM or Simple Harmonic Motion. Harmonic Motion can be natural or forced. The time of the swing is called the Period and is determined only by length of the pendulum and the force of gravity:
T = 2π√L/g
Rotational Frequency
ω = 2π/T
Don't forget α, β, γ, φ, ψ, θ!
[NS] {NR}