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3 cards from this section. Quick, good the night before a test.
What is angular momentum?
Think about how it relates to rotation.
What happens to the angular momentum of a spinning object if it spins faster?
Recall the formula and its components.
What is the formula for angular momentum?
Think about how mass and rotation relate.
True or False: The angular momentum of a rotating object changes unless acted on by an external torque.
Recall the principle of conservation.
A solid sphere of radius 0.5 m and mass 3 kg is rolling without slipping on a flat surface. What is its angular momentum when rolling at a speed of 4 m/s?
Remember to use both angular dynamics and kinematic relations to link linear and angular velocities.
A dancer with a moment of inertia of 2 kg·m² starts at rest and spins up to 4 rad/s while pulling in their arms. If we assume no external torques, what is their initial angular momentum?
Reflect on the importance of starting conditions when measuring momentum.
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