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