Simple mechanisms

Where have you used it?

A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads.

A wheel with a rod, called an axle, through its centre lifts or moves loads.

How is it used?

A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.

A wedge is an object with at least one slanting side ending in a sharp edge, which cuts material apart.

A Minecraft lever and a pulley.