Problem: The angular momentum of a system remains constant when: A. the total kinetic energy is constantB. when no net external force acts on the systemC. when the linear momentum and the energy are constantD. when no torque acts on the systemE. all the time since it is a conserved quantity

🤓 Based on our data, we think this question is relevant for Professor Rasmussen's class at WSU.

FREE Expert Solution
FREE Expert Solution

A. False

Σkinetic energy = ΣTranslational kinetic energy + ΣRotational kinetic energy.

The rotational kinetic energy may be converted to translational kinetic energy without any change in Σkinetic energy. This inter-change changes the angular momentum of the system even though total kinetic energy is constant.

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Problem Details

The angular momentum of a system remains constant when: 

A. the total kinetic energy is constant
B. when no net external force acts on the system
C. when the linear momentum and the energy are constant
D. when no torque acts on the system
E. all the time since it is a conserved quantity

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Conservation of Angular Momentum concept. You can view video lessons to learn Conservation of Angular Momentum. Or if you need more Conservation of Angular Momentum practice, you can also practice Conservation of Angular Momentum practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Rasmussen's class at WSU.