Mechanical engineering, a field where concepts of physics are applied to solve real-world problems, is among the broadest of all engineering disciplines in terms of scope.  In fact, practically all devices and objects that surround us in the daily lives are at least partly designed based on mechanical engineering principles (e.g., cars, smartphones, drones, prosthetic limbs, etc.) or are fabricated in an industrial setting using machinery and tools that are products of mechanical engineering.