This set is currently a work in progress. It will cover terms and concepts from A Beka Book Physics: The Foundational Science, Chapter 13: "Rotary Motion" (pages 186-205).

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### circular motion

term that describes a particle orbiting an external axis, like the planets orbiting the sun

### radian

term for the measure of an angle that, when its vertex is set upon the center of a circle, subtends an arc equal in length to the radius of that circle

### radius of a force (torque arm)

term for a vector directed from the center of rotation to the point where the force is applied, with a magnitude equal to the distance between these points

### torque (moment of a force)

term for the quantitative measurement of rotational motion caused by an applied force

### angular acceleration

For a body of given rotational inertia, changes in torque bring proportional changes in ____ ____.

### right-hand rule

rule that says that if you curl the fingers of your right hand in the direction of rotation, your thumb will stick out in the direction of angular momentum