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2.2.1 - Free body diagrams

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  • Vectors are quantities that have both magnitude and direction.
  • Free body diagrams are used to show the relative magnitude and direction of all forces acting upon an object.
  • Translational equilibrium is when the net force acting on an object is zero.

Vectors

A vector
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is a quantity that has both magnitude (or size) and direction. It is often represented by an arrow whose length corresponds to the magnitude of the vector and whose direction corresponds to the direction of the vector.
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