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Learn about an object's motion in a circular path with constant speed and its instantaneous acceleration, vector subtraction, centripetal acceleration, radius of turn, period of motion, and frequency concepts.
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Uniform Circular Motion • Involves an object moving in a circular path with constant speed
What is the instantaneous acceleration of the object at any time? • Here we're subtracting 2D vectors: and Note – These are SIMILAR triangles!
so and or now
so and or now
and so and so
or Square of Constant Speed Centripetal Acceleration Radius of Turn
Centripetal acceleration is always directed towards the centre of the circle.
Now, for one trip around the circle (one revolution) ... Period of Motion
And since Frequency of motion