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Uniform circular motion

Definition

Uniform circular motion refers to the movement of an object in a circle at a constant speed, where its velocity is always changing due to its direction constantly changing.

Analogy

Imagine yourself riding on a merry-go-round. Even if you're moving at a constant speed, you feel like you're being pushed outward because your direction keeps changing. This is similar to uniform circular motion, where an object experiences an inward force even though it moves at a constant speed.

Related terms

Centripetal Force: The force directed towards the center of rotation that keeps an object moving in uniform circular motion.

Tangential Velocity: The linear velocity tangent to the circle at any given point during uniform circular motion.

Periodic Motion: Any type of motion that repeats itself over regular intervals of time, such as uniform circular motion.

"Uniform circular motion" appears in:

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.