6 simple machines
Wedge: A trianglar shaped tool used to separate 2 objects or hold an object in place.
Lever: consists of a rigid rod pivoted at a fixed hinge or fulcram.
Screw: Consists of an inclined plane wrapped around a rod.
Pulley: consists of a grooved wheel with a rope looped around it.
Inclined plane: consists of a sloping surface on which an object can move.