It deals with the laws and principles of mechanics as they relate to engineering problems. Engineers have to plan, design and construct different structures and machines. If an engineer studies engineering mechanics he will be more skilled in his job.
Engineering can also be divided into static and dynamic mechanics. Static deals with the effect of forces on objects at rest. Dynamic deals with the effect of forces on objects in motion. Mechanical, electrical, and civil engineers all need to understand the internal effect of external forces applied to construction elements.