A hammer acts as a third-class lever when it is used to drive in a nail: the fulcrum is the wrist, the effort is applied through the hand, and the load is the resistance of the wood.

Is a claw hammer a second class lever?

A claw hammer used to pull nails is a first class lever that places the load near the fulcrum to make it easier to move.

Is knife a first class lever?

First, we identify that pliers and beam balance are first class levers. … And the knife is a third class lever which is a lever with the effort between load and fulcrum.