This concept is just as it sounds. In short, a work that doesn’t happen. The concept of virtual work becomes convenient when the angle between the tension the direction of virtual displacement is either zero or 180. Thus, in a sense, it can be said that the concept applies to 1 degree of freedom systems.
It is most essential to learn job oriented courses for mechanical engineering students. In such courses, you earn new skill that fulfills your mechanical career. These courses can make you CMM Operator, Quality Engineer, Production Engineer or related to this professional.
Material science has always a topic of research and fascination, about how a single atom has so many properties that can alter the whole tensile as well as the ultimate strength of a material such as cement or concrete which is used build skyscrapers …yes the same you watch in Hollywood movies.