But you can imagine, if I have just a wall, and then I have a spring attached to some mass right there, and let's say that this is a natural state of the spring, so that the spring would want to be here, so it's been stretched a distance y from its kind of natural where it wants to go.

From the experiment comes the observation. What do you see?

The return spring on the throttle cable, or...

And they can be modeled by a spring mass system that we call the spring mass system because we're biomechanists.

And I'll say this is a positive rightward direction, so it's that force, and then you have a minus force from the spring.

Watch that hand on the spring.

Once seated, your fourpiece will be mounted to the floor mount.

In spite of his condition he had no timidity about inching forward a bit on the spotless floor of the living room.

(Laughter)

They all work like this kangaroo, they bounce.

I can place the palms of my hands on the floor without bending my knees.

Good. You can start by sweeping the floor.

And let's say I have some external force right here.

The spring slams shut in 38 thousands of a second.

Go to the barber.

Wakeup time. Get up.

I've always preferred the floor.

I had two speedlights in the background, one just hanging under the ceiling, attached to a ceiling lamp.

It's not the spring. It's the linkage from the pedal to the carb. See?

Why don't you get a haircut?

Get a haircut.

Go to the barbershop.

You should go to the barbershop.

The floor is made of boards.

This is the action.

No, we can modify the workbench maybe to put a special stool, a special anvil, special vice, and maybe an electric screwdriver.

So we thought, OK, this must be a spring the saddle could very well be a spring.

Now you do the division. So let's do the division.

I just waxed.

I hope you mean the floor.

On the floor!

Floor

Of lying.

He goes to bed at eight o'clock.

Oh, you've been to the barbershop.

If you look on this, imagine a piano keyboard.

If long term beds are reduced, then it won't be possible to do that and normal sickbeds will also be adversely affected.

like Richard, or a cockroach, or a crab, or a kangaroo, the relative leg stiffness of that spring is the same for everything we've seen so far.

And the kitchen floor?

What about the floor?

He dashed the glass to the floor.

I go to bed very early.

Examination?

Let's go. On the floor.

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