HERE IN STATIC EQUILIBRIUM
HERE IN STATIC EQUILIBRIUM
All my moments have canceled
Sum of forces is equal
I’m fully inert, and doing no work
Here in static equilibrium.
Every push meets another;
Every pull has a counter;
The state I allude is true lassitude
Here in static equilibrium.
All my forces balance out exactly
You can even put me to a test
Push me out in any old direction
And you’ll find I’ll no longer be at rest.
Can’t you see that I’m happy
Sitting here, calm and mellow
Don’t want to go home, so leave me alone
Here in static equilibrium.
— tune: “Winter Wonderland
GRAVITY
A comet hits the earth,
It’s made of methane ice.
It makes a giant force.
Now isn’t that so nice?
So what made it come here?
What made it hit the earth?
The answer’s very clear, my friend,
It fills you up with mirth.
Gravity, gravity
Keeps us on the ground
An apple fell on Newton
He said, “What goes up comes down.”
Gravity, gravity
Mass times nine point eight.
Remember, travel very fast
If earth you must escape.
Walk around the earth;
Keep a steady pace.
If gravity weren’t here
You’d float away in space.
Call it what you want,
Call it any name.
But this force is a heavy weight,
Attraction is its game!
— tune: “Jingle Bells”
DECK THE PHYSICS LAB
Deck the physics lab with lenses, fa la la . . .
Light bends more when they are densest,
We can now observe reflection,
Not to mention its direction, fa la la la la la la la la.
Stroboscopes are swiftly turning, fa la la . . .
While our eager minds are learning,
Light diffraction we can now see,
See how fun our physics can be, fa la la la la la la la la.
— tune: “Deck the Halls”
TWINKLE, TWINKLE, LITTLE LIGHT
Twinkle, twinkle, little light,
Traveling on a line of sight,
Starting from an object pin,
Bouncing off a mirror thin,
Angle in and angle out,
They are equal, we all shout!
— from Jim and Jane Nelson
— tune: “Twinkle, Twinkle, Little Star”
MOMENTUM SONG
Cart is going faster now, faster now, faster now,
Cart is going faster now, more momentum.
Mass has gotten larger now, larger now, larger now,
Mass has gotten larger now, more momentum.
Impulse equals F times t, F times t, F times t,
Impulse equals F times t, that's an impulse.
Impulse causes delta P, delta P, delta P
Impulse causes delta P, more momentum.
- by Jane and Jim Nelson
- tune: "London Bridge"
NEWTON'S LAWS
Isaac Newton, Isaac Newton
Isaac Newton had three laws.
Now we have them; if we use them
We can explain motion's cause.
Isaac's First Law, not his best law
Says things do what they know best.
If they're resting, they will stay there;
If they're moving, they won't rest.
Just a bit more on the First Law
That you really ought to know:
An outside force that's not canceled
Really changes the whole show.
Now let's talk about this net force
And just what that it can do:
It can change the object's speed
And or its direction too.
Alright, what's next? Law number two
One equation and you'll pass:
To get the acceleration
Take the net force over mass.
Last but not least, Newton's Third Third Law
Forces always come in pairs.
Always there are equal forces
Even for our cheeks and chairs.
- words by Karen Gill with assistance from Scot Gill, Bob Schurtz, and Robert Shaner
- tune: "My Darlin' Clementine"
Newton's Laws
Words by Bill Franklin 1998, tune by Ginger Hildebrand
In physics there s a law that objects moving
Keep moving until forces make them stop.
When Galileo found it, physics started,
So on your list, put it at top.
A second law was added by Sir Isaac:
Resultant force produces change; in fact,
If objects change in speed or in direction,
In every case, net forces act.
His third law deals with objects that are touching.
Well, actually they never touch, you see,
But still they push the same on one another.
Oh, how can that possibly be?
And each and every mass throughout creation
Attracts the other ones with gravity,
Decreasing with the square of separation,
A matter of geometry.
This law, for which Sir Isaac is most famous,
Explains the paths of planets round the sun,
And why the tides flow ceaselessly on beaches.
Joined Earth and sky, stunned everyone.
Two hundred years and more these laws were tested,
In every time and place they checked out right,
Til Einstein dared to dream of light-speed travel.
Changed everything, oh, he was bright.
Then Niels Bohr took a look at glowing atoms,
And could they little suns and planets be,
But found that changes they could not make smoothly
In radius, or energy.
And soon it seemed that chance controls electrons;
That probability rules everywhere.
Tho Einstein never found this to his liking -
Does God throw dice? Does He not care?
Today we see that Newton s laws stand firmly
For everything we deal with day and night,
Above the realm of atoms and electrons,
And well below the speed of light.
So learn them well, and they ll solve all your problems.
Well, not all, but certainly a lot -
All problems you might have involving forces.
Remember well! Forget them not!
An Impulse to Sing
by Judy and Bill Franklin (written for the Impulse and Momentum workshop in 1999)
(Sung to the tune of The Yellow Rose of Texas )
Momentum is a concept
As real as it can be;
The product of an object s mass
And its velocity.
Its direction and its size are fixed.
They never change a bit,
Unless a force acts for a time
(An impulse acts on it).
It takes a mile to stop a train
That s loaded down with freight.
Although velocity is slow,
Its mass is very great.
A bullet from a rifle
Is rather short on mass.
But deadly speed it has to spare,
So duck and let it pass.
To set a thing in motion,
To get it off the dime,
We must apply an impulse;
We push it for a time.
It s just as hard to stop it.
Here, too, impulse we need.
Both time and force will slow it
And make it give up speed.
Momentum is a vector,
So objects will not swerve,
Unless some sideways impulse
Is used to make them curve.
Momentum is a concept
As real as it can be;
The product of an object's mass
And its velocity.
Pretty Fly, That Mr. White Guy.
by Heather Loomer, Heather Smith, and Viki Schollenberg
Give it to me baby,
Uh-uh, uh-uh.
Give it to me baby,
Uh-uh, uh-uh.
Give it to be baby,
Uh-uh, uh-uh.
You know it's kinda hard just to jump with gravite,
Our subject isn't cool but we like it anyway.
We may not have a clue about distance, rate, or time
But everything we lack will be obvious in this rhyme.
(Chorus)
So don't be late and make class wait,
'Cause if you don't go then your physics mark's at stake.
Electromagnetic fields, the shape of wheels,
For you know weight, for you know weight.
Gotta concentrate and accelerate,
Soon you'll know how to calculate your weight.
The world needs physicists,
So hey hey do that physics thing!
We need some new tools,
Not just any will suffice
So when we do our labs,
Our results will be precise.
Now cruisin' down the hallway,
We see hotties as we pass
But we don't look twice
'Cause we wanna do our labs!
(Repeat Chorus)
Mr. White's excited,
'Cause we're getting work done.
We gave our full attention,
Cause we know he's number one.
Fights fires by night,
Educates by day.
But in our own minds
He's the highlight of our day!!
................
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