a hammer
If you are pulling a nail out of wood, you are using a lever as a simple machine. By applying force to one end of the lever (the nail), you are able to lift the nail out of the wood using the principle of torque.
A nail is a simple machine. :DDD i learned that in tech today.
A wedge
Tu madre
A wedge
If you mean its classification, its a wedge.
A nail is considered a type of simple machine known as a wedge. When driven into a surface, the tapering shape of the nail allows it to apply force and split materials apart.
The simple machine used for removing a nail with a hammer is a lever. The hammer acts as the effort force, while the nail acts as the load. The fulcrum point is where the hammer applies force on the nail to remove it.
Lever
lever
the claw
A nail clipper is a class two lever coupled to a class three lever.