Here's why:
* Second-class levers have the fulcrum (the pivot point) at one end, the load in the middle, and the effort applied at the other end.
* Example: A wheelbarrow. The wheel acts as the fulcrum, the load is in the middle (the contents of the wheelbarrow), and you apply the effort at the handles.
How it works:
* Because the load is closer to the fulcrum than the effort, the effort arm (distance from the fulcrum to the effort) is longer than the load arm (distance from the fulcrum to the load).
* This means you need to apply less force to lift the load, but you have to move the handles a greater distance.
In other words: Second-class levers give you a mechanical advantage (less force needed), but you have to trade that for a longer distance moved.
