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Unit 3 Reading 1: Forces - Coggle Diagram
Unit 3 Reading 1: Forces
The gravitational Force
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Gravitational force exists between any two objects with mass, pulling them together, but it's usually too weak to notice unless one of the objects is very massive.
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Macroscopic Forces
Electromagnetic forces are behind most interactions we experience in daily life. Examples include friction or drag when surfaces rub or flow past each other, the normal force when an object rests on a surface, and tension force when a rope pulls on an object.
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Force Notation
Forces are represented by the symbol F, followed by a subscript to indicate the type of force:
Fₓ for gravitational force (e.g., Earth pulling on an object),
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Fᵀ for tensional force (from a rope or string),
F⊥ for normal force (support from a surface),
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Additionally, two subscripts can be used to specify the interacting objects: the first subscript represents the force's agent (the object exerting the force), and the second represents the object experiencing the force.