Pulley
What does "work" mean?
Work means using force to move an object.
What is a simple machine?
A simple machine is a tool that makes work easier.
A door stopper is a...
... wedge.
A pulley allows people to...
...move objects up by pulling one end of the pulley down.
Ryan and Papa visited...
Old Time Farm.
A seesaw is an example of...
... a lever.
Describe a "ramp."
A ramp is a slanted surface used to move objects up or down.
They all have wheel and axles.
Using force to move an object is called...
Work.
This simple machine is a slanted surface used to move things up or down.
Ramp.
Two wheels and a rod form...
A wheel and axle.
Pulley.
What is a fulcrum?
The point where the lever balances.
This simple machine has a thick and a narrow end, like a door stopper.
Wedge.
Two or more simple machines combined are called...
a compound machine.
Who was the first person to write about machines making work easier?
Archimedes.
A flagpole has this type of simple machine:
A crowbar is what type of simple machine?
Lever
A wagon has this type of simple machine:
Wheel and Axle
you push down one side of this simple machine, the opposite end moves up:
Lever