Circular Motion Basics

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What is circular motion?
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Circular motion is the motion of an object along the circumference of a circle or a circular path.
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What is uniform circular motion?
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Uniform circular motion is when an object moves in a circle with a constant speed.
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What is the role of centripetal force in circular motion?
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Centripetal force is the force that keeps an object moving in a circular path, directed towards the center of the circle.
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What is the formula for centripetal acceleration?
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Centripetal acceleration (a_c) is given by the formula a_c = v^2/r, where v is the velocity and r is the radius of the circle.
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How does mass affect centripetal force?
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Centripetal force is directly proportional to the mass of the object. Greater mass requires a greater centripetal force to maintain circular motion.
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What is angular velocity?
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Angular velocity is the rate of rotation around a circular path, measured in radians per second.
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How is period related to circular motion?
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The period is the time it takes for one complete revolution in circular motion, and is inversely related to frequency.
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What units are used to measure angular velocity?
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Angular velocity is typically measured in radians per second.
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How does radius affect centripetal force?
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Centripetal force is inversely proportional to the radius of the circle. Smaller radii require larger forces to maintain motion.
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What is the difference between centripetal and centrifugal force?
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Centripetal force is a real force acting towards the center, while centrifugal force is an apparent force felt outward due to inertia.
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What role does friction play in circular motion?
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Friction can provide the centripetal force necessary to keep an object moving in a circular path, especially in cases like a car turning.
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What is tangential speed in circular motion?
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Tangential speed is the linear speed of something moving along a circular path, determined by its distance from the axis of rotation.
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How does velocity change in circular motion?
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In uniform circular motion, the magnitude of velocity remains constant, but its direction continuously changes.
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What is a centripetal force example in daily life?
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An example is the tension in a rope that keeps a tetherball moving in a circle around its pole.
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What is the relationship between linear speed and angular speed?
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Linear speed is the product of angular speed and the radius of the circular path.
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