There are several different sources of power that machines need to operate. First, there are four different categories of power. This helps the machine work, move and function properly.
Mechanical power can be very interesting.
The reason I say that is because mechanical power can take a certain amount of energy and only take what it needs. Even though mechanical machines have unlimited motions, these motions are transmitted in three ways,with, links, gear, and connections. They're called linkages or gears such as a gear of a bicycle or the chain of a bike, and finally connections such as chains and ropes. All in all, mechanical machines are very fascinating in the way they work. Electrical machines are another wonderful type of machine.