6.7.2 - Angular momentum of a particle
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Practice Questions
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What is angular momentum?
💡 Hint: Think about how linear momentum relates to force and motion.
What role does torque play in rotational motion?
💡 Hint: Consider how force changes an object's motion.
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Interactive Quizzes
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What is the formula for angular momentum?
💡 Hint: Consider how momentum relates to position and velocity.
True or False: The angular momentum of a system is always conserved if no external torque acts.
💡 Hint: Think about the implications of net forces on a system.
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Challenge Problems
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A hollow cylinder rotates about its center. Calculate the final angular speed if a net torque of 10 N m is applied for 3 seconds given its moment of inertia is 4 kg m².
💡 Hint: Use the relationship between torque, moment of inertia, and angular acceleration.
Explore a spinning record; if it has an angular momentum of 12 kg m²/s when the radius decreases to half, what is the new angular speed?
💡 Hint: Think about how radius affects moment of inertia.
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