L, Me Say L !
Lyrics by Walter F. Smith
© 2003
Tune: Banana Boat Song (traditional)
Midi file by Anders Bakke
("AccordionMan"), ed. by WFS
(Click here to stop music playback)
Lyrics and chords: Word
format .. PDF format
Lyrics only: Word format .. PDF
format
Note: A dash after a syllable indicate
that it is extended over two notes. Underlines indicate emphasis.
Verses 3 and 5 are sung with the "beautiful bunch of ripe bananas"
version of the tune.
| [Start
out slowly.]
1. L – me say L-
Angular momentum equals r cross- p- !
L – vector cap L
[Slow down even more for this next line]
Magnitude of I omega, don’t you see.
[Pause, then start
up slowly, gathering
speed as you go through the next two lines.]
|
2.
Come, let us calculate angular momentum!
Angular momentum equals r cross- p- !
r from the center gets crossed into momentum!
Magnitude of I omega, don’t you see.
|
3.
Spin all night, and spin all day!
Angular momentum equals r cross- p- !
L is conserved, it won’t fade away!
Magnitude of I omega, don’t you see.
|
4.
L is a vector, and it points along the axis.
Angular momentum equals r cross- p- !
r p sin theta never wanes and never waxes!
Magnitude of I omega, don’t you see.
|
5.
Torque external can change the L!
Angular momentum equals r cross- p- !
tau is d-L d-t, now ain’t that swell!
Magnitude of I omega, don’t you see.
|
6.
L – me say capital L
Angular momentum equals r cross- p- !
L – me say vector cap L
Magnitude of I omega, don’t you see.
|
To download the midi (instrumental
accompaniment) file, right click here
and choose "Save Target As..."
Learn more about angular
momentum from Hyperphysics
Background image: Considerations
of angular momentum are critical for theories of star and solar system
formation. This image shows a simulation of the total advective radial
flux of axial angular momentum for a newly-formed star, from Lawrence
Berkeley Labs.
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