During a 2.0 s interval the angular momentum of a rigid body remains constant at 8 kg·m²/s

PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

During a 2.0 s interval the angular momentum of a rigid body remains constant at 8 kg·m²/s. What is the net external torque acting on the body during this interval, and how do you know its direction?

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