Second and third class levers both have the effort applied between the fulcrum and the load.
In a second class lever, the load is situated between the fulcrum and the applied effort. This configuration allows for a mechanical advantage, making it easier to lift heavier weights with less effort. A common example of a second class lever is a wheelbarrow, where the wheel acts as the fulcrum, the load is in the bucket, and the effort applied is by lifting the handles.
On the other hand, in a third class lever, the effort is applied between the fulcrum and the load. This type of lever is designed to increase the speed or distance of movement rather than the force exerted. A classic example of a third class lever is a pair of tweezers or a fishing rod, where the fulcrum is at one end, the load is at the other end, and the effort is applied in between.
In summary, while second and third class levers have different arrangements and functions, they both involve the effort being applied between two other points (the fulcrum and the load), showcasing the diverse ways levers can assist in mechanical tasks.