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What is uniform circular motion? Uniform
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circular motion is the motion of an
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object moving in a circular path with
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constant speed. In uniform circular
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motion, although the speed remains
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constant, the direction of the velocity
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continuously changes.
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This means the object is always
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accelerating toward the center of the
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circle. This inward acceleration is
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called centripetal acceleration and is
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caused by a force known as centripetal
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force. Uniform circular motion is common
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in many real-life situations, including
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planetary motion and rotating objects.
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Imagine tying a ball to a string and
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swinging it in a circle. Even if the
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speed stays the same, the ball keeps
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changing direction, which means it is
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accelerating toward the center.
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Examples: A stone tied to a string and
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whirled in a circle. A car moving around
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a circular track at constant speed. A
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satellite orbiting Earth. The motion of
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planets around the Sun. Rotation of a
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fan at constant speed.
