27. When torque applied on a system is zero, which of the following will be constant?
(1) Moment of inertia
(2) Angular velocity
(4) Moment of linear momentum
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Explanation:
If Torque = 0 ; that means either Force(perpendicular) = 0 , or Radius = 0; Case I : If Force(perpendicular) = 0; that means Acceleration(perpendicular) will be equal to 0; therefore Velocity(perpendicular) won't change . This implies Angular Momentum (L=mvr) won't change. Angular Momentum remains constant.
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Answer:angular momentum remains conserved
Explanation:
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