A lever is an example of a simple machine.
Here's why:
1. A simple machine is a device that helps make work easier by allowing us to apply less force over a greater distance. Levers fall under this category.
2. A lever consists of a rigid bar that pivots on a fixed point called a fulcrum. By applying a force at one end of the bar, we can lift or move an object located at the other end with less effort.
3. Examples of levers in everyday life include see-saws, crowbars, and even a pair of scissors. Each of these devices uses the basic principle of a lever to amplify the force applied.
So, in summary, a lever is classified as a simple machine because it follows the fundamental concept of a simple machine by allowing us to accomplish tasks with less effort.