A compound machine is a device that is made up of two or more simple machines working together to accomplish a specific task. Simple machines, such as levers, pulleys, inclined planes, screws, wedges, and wheels and axles, are basic mechanical devices that can be used to multiply or change the direction of force or motion. When two or more simple machines are combined in a specific way, they can form a compound machine that is capable of performing more complex tasks than each individual machine could perform on its own. Some examples of compound machines include bicycles, cranes, cars, and even the human body, which is composed of various simple machines that work together to allow movement and perform other functions.
