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Questions and Answers
At which point will the vertical velocity be equal to zero?
At the highest and lowest points of the circular motion.
What would be the horizontal velocity at that point?
The horizontal velocity will remain constant.
What happens if we apply force in the same direction as the velocity?
The object's speed will increase.
What happens if force and velocity are opposite?
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What if force and velocity are perpendicular?
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What is centripetal force?
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There is such a thing as centrifugal force.
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What is tangential velocity?
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What is centripetal acceleration?
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What does period mean in circular motion?
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What is frequency in the context of circular motion?
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What is angular frequency?
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Study Notes
Uniform Circular Motion
- Motion of an object moving in a circular path with a constant speed
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Requirements:
- Constant net force towards the center of the circle
- Constant velocity at a 90° angle to the net force
- Centripetal Force: Net force on an object moving in a circle, always directed toward the center.
- Centrifugal Force: Not a real force. It's a perceived outward force experienced by objects moving in a circle.
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Tangential Velocity: The distance an object travels around a circle divided by the time taken.
- Measured in meters per second (m/s)
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Radius: The distance from the center of the circle to the object's path.
- Measured in meters (m).
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Centripetal Acceleration: Acceleration of the object pointing towards the center of the circle.
- Always in the same direction as the force.
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Period: Time taken for one complete cycle of the circular motion.
- Measured in seconds (s).
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Frequency: Number of cycles completed in one second.
- Measured in Hertz (Hz).
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Angular Frequency: Rate of rotation measured in radians.
- Formula: 𝜔 = 2𝜋/𝑇, where T is the period.
- Formula: 𝜔 = 2𝜋f, where f is the frequency.
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Description
Test your understanding of uniform circular motion with this quiz covering key concepts such as centripetal force, tangential velocity, and the distinction between centripetal and centrifugal force. Evaluate your grasp of essential formulas and definitions related to objects in circular motion.
