engineering Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more speciali ...

, a parallel force system is a type of force system where in all forces are oriented along one axis. An example of this is a see saw. The children are applying the two forces at the ends, and the

fulcrum A fulcrum is the support about which a lever pivots. Fulcrum may also refer to: Companies and organizations * Fulcrum (Anglican think tank), a Church of England think tank * Fulcrum Press, a British publisher of poetry * Fulcrum Wheels, a bicy ...

in the middle gives the counter force to maintain the see saw in neutral position. Another example are the major vertical forces on an

airplane An airplane or aeroplane (informally plane) is a fixed-wing aircraft that is propelled forward by thrust from a jet engine, Propeller (aircraft), propeller, or rocket engine. Airplanes come in a variety of sizes, shapes, and wing configurat ...

in flight (see image at right).

References

* * * *{{cite book, author1=M. N. Shesha Prakash, author2=Ganesh B. Mogaveer, title=Elements of Civil Engineering and Engineering Mechanics, url=https://books.google.com/books?id=1qd2BAAAQBAJ&pg=PA25, date=30 July 2014, publisher=PHI Learning Pvt. Ltd., isbn=978-81-203-5001-4, page=25 Force Classical mechanics Mechanics Mechanical engineering