Which statement best describes how a screw functions as a simple machine?

A screw is considered a type of simple machine that effectively converts rotational force into linear force. This is achieved through the helical design of the screw, which consists of a cylindrical shaft with a spiral thread wrapped around it. When you turn the screw, the circular motion (rotational force) applied to the handle or head is transformed into a linear motion that drives the screw into another material.

This mechanism is what allows screws to both fasten objects together and exert force along a particular direction, making them versatile tools in various applications. The efficiency of this conversion also means that the mechanical advantage of the screw is significantly increased, since the effort applied can translate into much greater force acting on the object being fastened.

In summary, the ability of the screw to convert rotational motion into linear motion effectively illustrates its function as a simple machine, making the first statement the best description of how a screw operates.