What effect does increasing the length of a lever arm have on the force required to lift an object?

When the length of a lever arm is increased, it allows for a greater mechanical advantage when lifting an object. This is based on the principle of levers, which states that the longer the distance from the fulcrum (the pivot point of the lever) to the point where the force is applied, the less force is needed to lift the same load.

This occurs because a longer lever arm spreads the force over a greater distance, which can significantly reduce the effort required to lift a given weight. Essentially, this means that with a longer lever, you can use less force to achieve the same lifting effect. Therefore, increasing the length of the lever arm effectively decreases the force required to lift the object, making it easier to move heavier loads.