Answer:
Gears work on the principle of mechanical advantage .
Explanation:
Gears are usually used for two purposes increasing speed and force. Gears work on the principle of mechanical advantage.
Mechanical advantage of a system is defined as the ratio of output force to the input force.For gears we have special term called gear ratio.
[tex]gear ratio=\frac{final gear's speed}{initial gear's speed}[/tex]
As the gears rotate with a angular velocity we say that gears operate with rotation energy. These are usually connected to a big system where electrical energy is converted into mechanical i.e. rotational energy. So the gears form up a connection series called gear train to increase or decrease the speed or any other requirement.
