The net torque acting on an object is zero. What can you say about the angular momentum (about the same axis) of the object?
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Question
The net torque acting on an object is zero. What can you say about the angular momentum (about the same axis) of the object?
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Answer:
The angular momentum (about the same axis) of the object is constant
Explanation:
Torque is the time time derivative of angular momentum.
τ = dL / dt
where;
dL is the change in angular momentum
τ is torque acting on the object
dt is change in time
when net torque acting on an object is zero, then
dL / dt = 0
Change in angular momentum (ΔL) is zero, therefore we can say that the angular momentum (L) is constant.
Thus, the angular momentum (about the same axis) of the object is constant.