Claw Hammer Pulling Nail

- Image ID: AD3MY1
Claw Hammer Pulling Nail
Phil Degginger / Alamy Stock Photo
Image ID: AD3MY1
A first-class lever is a lever in which the fulcrum is located between the input effort and the output load. In operation, a force is applied (by pulling or pushing) to a section of the bar, which causes the lever to swing about the fulcrum, overcoming the resistance force on the opposite side. The fulcrum may be at the center point of the lever as in a seesaw or at any point between the input and output. This supports the effort arm and the load.