When Is the Angular Momentum of a System Constant

question 63

Multiple Choice

When is the angular momentum of a system constant?

• A)Only when its total kinetic energy is constant.
• B)Only when no net external force acts on the system.
• C)Only when the linear momentum and the energy are constant.
• D)Only when no net external torque acts on the system.
• E)Only when the moment of inertia is constant.

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