Here's a breakdown:
* Wheel: The central part of the pulley is a circular disc, usually made of metal or plastic.
* Groove: A channel or indentation is cut into the outer edge of the wheel. This groove guides the rope or cable that runs through the pulley.
* Bearing: The wheel often sits on a bearing to allow it to rotate smoothly.
* Sheave: Sometimes the entire pulley is called a "sheave."
Here are some common types of pulleys:
* Single Pulley: This is the simplest type, with a single wheel and groove.
* Double Pulley: Has two wheels and grooves, allowing for more complex systems.
* Block and Tackle: This is a system of multiple pulleys that work together to increase mechanical advantage.
Here are some visuals:
* Image Search: You can find images of pulleys by searching for "pulley" on Google Images.
* YouTube: Look up videos demonstrating different types of pulleys.
I hope this helps! Let me know if you have any other questions.