Cranes aren't pulleys themselves, but they use block and tack... I THINK im not sure...dont think my answer its correct!!
Have you ever seen an old fashion water well, the kind with a bucket? The bucket is raised and lowered by a rope on a single pulley.
It is a fixed pulley
Single movable pulley
A flagpole is a pulley.
A single moveable pulley.
No, a pencil sharpener is not a kind of pulley. A pencil sharpener is a tool used to sharpen pencils, while a pulley is a simple machine that consists of a wheel on an axle, used for lifting and moving objects.
The kind of pulley attached directly to the object being moved is known as a fixed pulley. It acts as a redirection point for the rope or cable, changing the direction of the force applied. However, it does not provide any mechanical advantage.
A well is a fixed pulley. It changes the direction of the force applied to lift a bucket of water, but it does not move itself.
pulley
pulley
movable
snatch block