I. Mechanical Engineers study physical machines that may involve force and movement. They combine engineering physics and mathematics principles with materials science, to design, analyse, manufacture, and maintain mechanical systems. Mechanical Engineer also requirethe knowledge and understanding of the thermal environment and forces to create a product, its parts, and subsystems for functionality, aesthetics, and the ability to withstand the forces and the thermal environment that they will encounter; and to determine the best way to manufacture and operate them without failure. In addition, a Mechanical Engineer needs to know how to work with people, ideas, data, and economics. They are found in manufacturing, food processing, aerospace, biotechnology, nuclear, mining, energy, and petroleum industries.