This set covers Abeka Physics Chapter 9: "Concurrent Forces" (pages 130-143).

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• ### free-body diagram

term for a drawing of a body in isolation from all other bodies to show all the forces acting on that body

### principle of transmissibility

principle that says that a force may be applied anywhere along its line of action without changing its effect

### tension

term for the force transmitted by a string or other connector

### downward

The direction of any vector representing weight is _____.

### center of gravity

term for an object's point of balance

### motion

A vector's direction is always opposite to _____.

### translational equilibrium

A body that is not accelerating is in _____ ______.

### concurrent vectors

term for two or more vectors acting simultaneously upon the same point

### resultant

term for a single vector representing the same effect as concurrent vectors acting separately

### equilibrant

term for the force that achieves equilibrium

### opposite

The equilibrant is directly ______ of the resultant.

### normal force

term for the force a surface exerts perpendicularly against an object's weight

### magnitudes, directions

The relationship between friction force and the normal force is a relationship between their ______, not their ______.

term for structures that use tension to keep a load from moving away from a desired position

Example: