Physics I Class 12. Uniform Circular Motion. Newton’s Second Law - Yet Another Review!. Uniform Circular Motion. When an object travels in a circle, its velocity is constantly changing (in direction at least).
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Uniform Circular Motion
That means the object has a non-zero acceleration even if it moves at constant speed.Acceleration in Circular Motion
Twirl a 1 kg rock attached to a string in a 1 m radius vertical circle. The speed is 4 m/sec. What forces act on the rock and what are the directions of those forces?