What is compound machine?

A compound machine is a device that is made up of two or more simple machines that work together to efficiently perform a particular task. The combination of simple machines makes it possible to perform tasks that would otherwise be impossible or require a lot more effort.

Examples of compound machines include bicycles, scissors, cranes, and cars. In a bicycle, for instance, the chain and sprockets work together to transmit power from the pedals to the rear wheel, while the gears and wheels work together to multiply the pedal force so that the rider can travel faster or climb hills easier.

Compound machines can be found in many applications ranging from small scale devices to large industrial machines. The use of compound machines has revolutionized many industries, making it possible to perform complex tasks with relatively little effort and maximizing efficiency.