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3 cards from this section. Quick, good the night before a test.
What is angular momentum?
Think about how linear momentum relates to force and motion.
What role does torque play in rotational motion?
Consider how force changes an object's motion.
What is the formula for angular momentum?
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.
Think about the implications of net forces on a system.
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.
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?
Think about how radius affects moment of inertia.
5 more questions in this section. Enroll free to practise them all.
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