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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