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STD 11 - 6. system of particles and rotational motion — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 6. system of particles and rotational motion4 Marks
MCQ
When torque applied on a system is zero, which of the following will be constant?
  • A
    Moment of inertia
  • B
    Angular velocity
  • C
    Kinetic energy
  • ✓
    Moment of linear momentum
✓

Answer

Correct option: D.
Moment of linear momentum
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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