a shovel performed several different functions one of these is that it gives mechanical advantage as a lever when does it act like a liver

Answer 1

A shovel acts like a lever when you use it to lift or move heavy materials, such as dirt or gravel. In this case, the shovel functions as a lever, where you can identify the following components:

1. Fulcrum: The point around which the lever pivots. When using a shovel, this is typically at the point where the handle meets the blade, or where the blade contacts the ground.

2. Effort: This is the force you apply, usually by pushing down on the handle of the shovel.

3. Load: The weight of the material you're lifting with the shovel, which is on the blade.

When you apply downward force on the handle of the shovel, the blade lifts the load, creating a mechanical advantage. This means that you can lift heavier loads than you could by just using your hands, as the shovel allows you to exert a smaller force over a greater distance, leveraging the mechanics of the lever.

In this way, the shovel can significantly reduce the effort needed to lift heavy objects, demonstrating the principles of mechanical advantage through leverage.