Here's why:

* Class 1 Lever: The fulcrum (pivot point) is located between the effort (force applied) and the load (object being moved). This arrangement allows for mechanical advantage, meaning you can apply less force over a greater distance to move a heavier load.

Example: A seesaw is a classic example of a Class 1 lever. The fulcrum is in the middle, the effort is applied on one end (your push), and the load is on the other end (your friend).

Other Lever Classes:

* Class 2 Lever: The load is located between the fulcrum and the effort (e.g., a wheelbarrow). This arrangement provides a force multiplier, making it easier to lift heavy loads.

* Class 3 Lever: The effort is located between the fulcrum and the load (e.g., tweezers or a fishing rod). This arrangement increases speed and distance, but requires more force to move the load.