3. What is a pulley?

Question

A flat surface used to slide objects from one level to another
• А rope wrapped around a wheel, allowing you to pull in the opposite direction, or over a longer distance, to make it easier to do work
• A heavy object used to keep things in place
• A stick used to push heavy objects

Answer 1

A rope wrapped around a wheel, allowing you to pull in the opposite direction, or over a longer distance, to make it easier to do work.