What is a screw?

A screw can be defined as an inclined plane that has been wrapped around a cylindrical shaft. This configuration allows it to convert rotational motion into linear force. When rotation is applied to the screw, the inclined plane design facilitates the movement of the screw in a linear direction along its axis. This principle is crucial in various applications, such as fastening items together or lifting loads. The spiral design not only aids in this conversion but also enhances the mechanical advantage, allowing for the effective transfer of force with relatively low input energy.

The understanding of a screw as an inclined plane is foundational in mechanical engineering, where it is recognized for its ability to provide both fastening and lifting capabilities through its unique geometry. In practical terms, this makes screws immensely useful in construction, machinery, and everyday tools, as they securely bind components while also enabling movement when needed.