Screw

The video tutorial explains what a screw is, describing it as a grooved metal rod used for various purposes such as attaching, lifting, or making holes in objects. It is identified as a simple machine, specifically an inclined plane wrapped around a rod. The tutorial elaborates on how inclined planes facilitate moving objects between different levels. It highlights the practical applications of screws in everyday objects like jar lids and light bulbs, and their role in lifting or lowering objects. The Archimedes Screw is introduced as a tool for moving water. The video concludes by prompting viewers to consider the similarities between the work done by inclined planes and screws.

How do screws make it easier to lift or lower heavy objects?

Describe how the Archimedes Screw operates and its applications.