MCQ
When torque applied on a system is zero, which of the following will be constant?
- AMoment of inertia
- BAngular velocity
- CKinetic energy
- ✓Moment of linear momentum
✓
Answer
Correct option: D.
Moment of linear momentum
d
(d)
(d)
When the torque acting upon a system is zero, the angular momentum is constant and hence is conserved. This is analogous to the linear counterpart i.e. when the force on the system is zero, the momentum is conserved.
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