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Free Body Diagrams A simplified way to draw an object and all the forces that are acting on it.

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Presentation on theme: "Free Body Diagrams A simplified way to draw an object and all the forces that are acting on it."— Presentation transcript:

1 Free Body Diagrams A simplified way to draw an object and all the forces that are acting on it

2 3 Simple Steps 1.Replace the object with a dot. 2.Identify all the long-range forces acting on the object. We have only discussed one long-range force – gravity 3.Identify all the contact forces acting on the object. Remember that only something that is physically touching the object can apply a contact force Possible types of contact forces – push, tension, normal, and friction

3 Things to Remember Always follow all 3 steps Force due to gravity acts on all objects and always points down Force arrows must originate from the dot, this means that you will never have an arrow pointing at the dot, always away from the dot Surfaces apply a normal force that is always perpendicular to the surface (they can be at strange angles-IT IS OKAY)

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