A vise has 2 simple machines, a screw and a lever, but the main one is the screw.
A screw is the simple machine used to make a vise open and close. The screw allows for the controlled movement of the two jaws in the vise, enabling it to grip and release objects effectively.
A pulley isn't a kind of simple machine, it is a simple machine
A vise uses a screw as a simple machine to open and close the jaws. Turning the screw in one direction tightens the jaws to secure an object, while turning it in the opposite direction releases the object.
A train is not a simple machine.
IT's NOT A SIMPLE MACHINE!
its not a simple machine
A bench vise is used for general work for a typical home owner. A machinist vise is used for precision machine work not to be abused.
It is a simple lever.
Rope is not a simple machine on its own, it's a simple machine on a wheel and axle, then it's a pulley.
a compound machine is a combination of simple machines
lever
lever