FIGURE 11-2
-Angular momentum cannot be conserved if
A) the angular acceleration changes.
B) the angular velocity changes.
C) there is a net force on the system.
D) the moment of inertia changes.
E) the net torque is not zero.

Question

FIGURE 11-2 
-Angular momentum cannot be conserved if
A) the angular acceleration changes. 
B) the angular velocity changes. 
C) there is a net force on the system. 
D) the moment of inertia changes. 
E) the net torque is not zero.

Quizplus · Accepted Answer

Angular momentum is conserved only when the net torque acting on the system is zero. If there is a non-zero net torque, then the angular momentum will change over time, regardless of whether the angular acceleration, angular velocity, or moment of inertia is changing. Therefore, choice E is the best choice.

FIGURE 11-2 -Angular Momentum Cannot Be Conserved If