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RATINGS: Sites are rated from 1 owl (good) to a high of 5 owls. Read more- Free Body Diagramming
A rather wackily designed bridge at this Syracuse University Physics Department website illustrates the usefulness of free body diagrams for calculating the net forces acting upon a structure. Move step by step through the process of making FBDs by clicking on the links at the bottom of the page.
Contact Forces Review contact and at-a-distance forces, and practice making free body diagrams.
- Forces, Equilibrium, and Frames of References
With horizontal forces, vertical forces, and frictional forces, physics is forceful stuff! This graphically challenged but informative college website describes net force with the help of Galileo and Newton, two experts in the field.
- Eloquent Logic: Net Force
How many people does it take to move a refrigerator? For starters, it helps if they're all pushing in the same direction, so the net force will be greater. This page, part of a ThinkQuest-hosted site called Eloquent Logic: A World of Physics and Math, examines net force with plenty of colorful pictures and diagrams (including free body diagrams, of course).Vector Dynamics Here are two more examples of free body diagrams.
- The Elevator Problem
It's probably no coincidence that the 13th scenario on this high school webpage deals with a physics student in a free-falling elevator. For many, imagining such a situation doesn't involve rational, logical thinking. But for this intrepid physicist it's just one more opportunity for observation. There are 15 scenarios in all, and at the bottom of the page is a link to answers and explanations.
- Nautical Net Forces
Ahoy, matey! At this college website, build a free body diagram, step by step, force by force, to determine the net force acting upon a sailing ship. "Free" means the ship is freestanding. "Body" refers to the object (in this case, the ship). Remember, the force of gravity is present even in the water.
- Interactive Free Body Diagrams
Free body diagrams, or FBDs, help students conceptualize the forces acting upon an object. Practice drawing FBDs to get a good understanding of what they describe. This website offers 12 interactive, free body diagram problems. (Shockwave required)
Determining Net Force
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