Simple Machines

A simple machine is a device that makes work easier by allowing us to push or pull in a more efficient way.

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called a fulcrum.

An inclined plane is a flat surface that is tilted at an angle to help raise or lower objects.

A wedge is a simple machine that is used to separate two objects or portions of an object, often by being driven into them.

A screw is a simple machine that consists of a spiral inclined plane wrapped around a cylinder.

A pulley is a simple machine that consists of a wheel on an axle or shaft that is designed to support movement and change of direction of force.

A seesaw is an example of a lever.

A ramp is an example of an inclined plane.

A butter knife is an example of a wedge.

A flagpole with a rope to raise and lower the flag is an example of a pulley.