The Way Things Work Now Pt 1.

What is a machine?

Anything that helps us do work. Printer, tractor, pencil, etc.

Inclined Plane

A flat surface tilted at an angle, used to help raise or lower objects. Ramps, slides, etc.

How do inclined planes help us?

Reduces the amount of force needed to lift an object and makes it easier to raise or lower heavy items.

Slope is double the distance but ___ the effort

half

How do locks and keys work?

A key is inserted into the lock. It must have the correct ridges, so the pins can get pushed so that the splits line up with the sheer line.

How would you get a master key?

You add extra master pins that will line up with the sheer line using that key as well.

All cutting machines are inclined planes. True or false?

True

Scissors have __ inclined planes

2

How many wedges does a zipper have? How many inclined planes?

3 wedges (1 top wedge, 2 bottom wedges), 6 inclined planes.

What does the top wedge of the zipper do? What about the bottom wedges?

The top wedge pushes things out, and the bottom wedges pushes things in.

Every machine is built out of a lot of ________.

simple machines

What is a lever?

A lever lets you trade distance for force. If you push farther, and the lever pushes harder.