Mechanics is a branch of the physical sciences and the practical application of mechanics. Applied mechanics describes the response of bodies (solids and fluids) or systems of bodies to external forces. Some examples of mechanical systems include the flow of a liquid under pressure, the fracture of a solid from an applied force, or the vibration of an ear in response to sound. A practitioner of the discipline is known as a mechanician.
Engineering Mechanics is one of the core courses that all engineering students must take. Broadly, mechanics is broken into topics: Statics and Dynamics. In this course, we begin to focus on Engineering Statics, where we solve force systems in static equilibrium. First, we revew Newton's Laws, Units, and Trigonometry. Next, we learn how to add vectors together using triangles and trigonometry.We then introduce the Cartesian representation of a vector, which is used to solve more complex problems in vector addition of forces. Finally, we review the tools needed to work with vectors in 3D space, and solve problems of several types.