You are using a lever when you pull a nail with a hammer or bar.
a nail is a wedge
A lever.
A screw is a simple machine because it incorporates an inclined plane, which is one of the most basic machines used for centuries.The screw is considered a simple machine because it has an inclined plane that swirls up an around a nail.
chisel, floor nail, knitting needles, shark tooth, pins, knives, axes, fork
Yes. A machine is a mechanical device that transmits energy. Clamps fit the definition.
A wedge
Lever
a nail is a wedge
a hammer
A nail is a simple machine. :DDD i learned that in tech today.
A wedge
Tu madre
A hook isn't really a "machine" at all. Depending on its construction, in a particular application it might be operating as a lever, or possibly as an inclined plane, but it's really not possible to say with any certainty what kind of simple machine it is without more details of exactly what the hook is doing. It may not be any kind of simple machine.
If you mean its classification, its a wedge.
lever
the claw
A nail clipper is a class two lever coupled to a class three lever.