A device that is thick at one end and tapers to a thin edge at the other end.
An inclined plane wrapped around a cylinder.
A rigid bar that is free to pivot, or rotate, around a fixed point.
The fixed point that a lever curves around.
Wheel and Axle
A simple machine made of two circular or cylindrical objects that are fastened together and that rotate about a common axis.
A grooved wheel with a rope wrapped around it.
A machine that utilizes two or more simple machines.
A flat slanted surface.
Inside the pencil sharpener is an axle that turns gears.