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Deriving the centripetal acceleration formula. A body that moves in a circular motion (of radius r) at constant speed (v) is always being accelerated. The acceleration is at right angles to the direction of motion (towards the center of the circle) and of magnitude v2 / r. The direction of acceleration is deduced by symmetry arguments.
Your next lesson will play in 10 seconds. 1  0:01 Definition ofâ¦. 2  2:10 Calculating Centripetal Force. 3  3:08 Example of Centripetal Force. 4  4:36 Centripetal Force in Space. 5  6:56 The Centrifuge. 6  8:44 Lesson Summary.