6. Energy and Momentum of Rotating Systems
Conservation Of Angular Momentum — Quiz
Test your understanding of conservation of angular momentum with 5 practice questions.
Practice Questions
Question 1
What quantity is conserved when no external torque acts on a system?
Question 2
A figure skater pulls her arms inward while spinning. What happens to her angular speed if external torque is negligible?
Question 3
Which expression represents angular momentum for a rigid object rotating about a fixed axis?
Question 4
A spinning turntable has a moment of inertia of $2\,\text{kg}\cdot\text{m}^2$ and an angular speed of $3\,\text{rad/s}$. What is its angular momentum?
Question 5
Why can angular momentum be conserved even when kinetic energy is not conserved?