A mechanical engineer researches, designs, develops, manufactures, and tests tools, engines, machines, and other mechanical devices. Mechanical engineering is one of the broadest engineering disciplines. Engineers in this discipline work on power-producing machines such as electric generators, internal combustion engines, and steam and gas turbines. They also work on power-using machines such as refrigeration and air-conditioning equipment, machine tools, material handling systems, elevators and escalators, industrial production equipment, and robots used in manufacturing.
The mathematics required for mechanical engineering includes but is not limited to College Algebra, Geometry, Trigonometry, Calculus I and II, Linear Algebra, Differential Equations, and Statistics.
In order to find the average income of a mechanical engineer, please use this link.
For more information about mechanical engineering, the US Bureau of Labor Statistics breaks down the job of a mechanical engineer into multiple sections to help better understand the requirements of becoming a mechanical engineer.