The transmission lever is very simple and there is no friction.
They have to overcome less friction
You can move a large load using a relatively small effort. http://www.deyes.sefton.sch.uk/technology/AS&Alevel/mechanical_systems.htm
Scissors are a combination of two simple machines: levers and wedges. The two blades act as levers that pivot around a central fulcrum, allowing for a mechanical advantage when cutting. The sharp edges of the blades function as wedges, converging to slice through materials. Together, these simple machines enhance the efficiency and effectiveness of the cutting action.
The two types of mechanical devices are simple machines and complex machines. Simple machines include tools like levers, pulleys, and screws, while complex machines are made up of multiple simple machines working together, such as engines or robots.
The study of machines is called "mechanical engineering." Mechanical engineering involves the design, analysis, and manufacturing of mechanical systems, which can range from simple machines like levers and pulleys to complex systems like aircraft engines and robots. Mechanical engineers apply principles of physics, materials science, and mathematics to develop efficient and reliable machines for various applications.
Levers. Mostly levers.
Levers and wedges are alike in that they are both simple machines that enable the transfer or work from one object to another. They both work by applying force at a specific point to provide mechanical advantage for performing tasks.
functional levers
Yes it is
Mechanical communication involves the transfer of information using physical systems or mechanisms, such as pulleys, gears, or levers. This type of communication relies on the transmission of signals through mechanical devices to convey messages between individuals or machines.
The spokes of a wheel are comparable to levers. Longer spokes give more mechanical advantage. Even in a wheel that is solid, and has no spokes, the greater the diameter, the greater the mechanical advantage.
Mechanical advantage is not the only reason to use levers.