"Baby in Hertz (Simple Harmonic Motion)"
(c) 2015 Scott Hawley
(An R&B song whereby, instead of spelling out a word
in the chorus, we spell out an equation.)


A stable equilibrium 
is what it's gonna take
To make something go back and forth
i.e., to oscillate
A force called Hooke's Law
Is what causes this reaction
It varies linearly with displacement 
And it's a force of attraction.

CHORUS:
Take the square root of the ratio of k over m
where k's the constant of the spring,
m is the mass.
Divide that by 2 pi
And what you've got there is the
Oscillation frequency, Baby in Hertz.

VERSE 2:
There's a lot of systems
That are oscillating things
From atoms to galaxies
To circuits and strings
This phenom'na's so universal
I can't overemphasize it
Any force, for small displacements
You can prob'ly linearize it

chorus

BRIDGE:
Add some friction, it'll dissipate
Add a driving force, it can resonate
Add a charge, it will radiate
That's what happens when things oscillate!