ABSTRACT
This chapter introduces mechanical engineering. It gives the idea of using visual and mathematical models as a basis for problem solving. The chapter describes the use of free-body diagrams and thermofluid systems as visual models of real situations. It discusses Newton's laws as a basis for mathematical modelling. The chapter explores the SI system of units. As a starting point, mechanical engineering can be defined as that branch of engineering concerned with the design, manufacture, installation and operation of engines and machines. One of the key functions of mechanical engineering is to design new products. These were concerned with the building of roads, bridges and canals. The civil engineering activities were recognized by the formation in the UK of the Institution of Civil Engineers, the first professional engineering society, in 1818, with Thomas Telford as its first president. The whole purpose of studying mechanical engineering is to be able to solve problems.
