Simple Machines

A simple machine is a device that changes the direction or magnitude of a force, making work easier. Examples include levers, pulleys, and inclined planes.

The six types of simple machines are: lever, wheel and axle, pulley, inclined plane, wedge, and screw.

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum. It is used to lift or move loads.

A wheel and axle is a simple machine that consists of a larger wheel attached to a smaller axle, allowing for easier movement of loads.

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

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

A wedge is a simple machine that is used to split, cut, or separate objects. It has a thick end and a thin edge.

A screw is a simple machine that consists of a cylindrical shaft with a helical ridge, used to hold objects together or lift materials.

A lever works by using the fulcrum to multiply the input force, allowing a smaller force to lift a heavier load.

The mechanical advantage is the ratio of the output force to the input force, indicating how much a machine multiplies force.