We just learned about the linear actuator.
Another type of actuator or moving machine is a Cam.
A cam is a disc usually on a rotor that is spinning around.
The disc is mostly shaped like a circle, but it as a part that sticks out like a bump.
The circle disc is called the camp plate, disc cam or radial cam.
When the rotor spins around, that bump part of the cam can push down on something like a shaft or a pole.
Machines can use this to push those shafts down over and over again.
So every time the rotor spins around, it pushes the shaft down and then back up.
(from: wikipedia - cam)
Kid Facts - Blast from the past: Lagari Hasan Çelebi
