Not a machine but a tool, a wrench.
A lever jaw wrench is one with an adjustable jaw.
No, the wrench is a compound example of the lever and the screw combined.
A wrench is a lever for tightening or loosening bolts .
no. it does however provide leverage.
Lever.
No. In a first class lever, the fulcrum is in the middle. Such as see-saws.
wedge is another simple machine kind of lever
Lever as in type of tool .... or the power of the impact...the impact uses air to cause a hammering motion inside the tool giving it the ability to break things loose or you can set some impacts for the torque needed to tighten things down
a wrench is kind of like a spanner
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.
it is a 2nd class lever