How Do Planes Fly?

For an object that can weigh up to 500 tons, how can a giant piece of metal fly and stay up in the sky? For a plane to stay in flight it needs four forces to work together: thrust, lift, weight (or gravity), and drag.

Want to learn more about planes?

http://www.wright-brothers.org/History_Wing/History_of_the_Airplane/History_of_the_Airplane_Intro/History_of_the_Airplane_Intro.htm
https://www.nasa.gov/audience/forstudents/k-4/stories/ames-how-do-planes-fly-text.html
http://science.howstuffworks.com/transport/flight/modern/airplanes.htm

That took some thinking! If you have any questions you would like answered leave a comment below!

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