Based on the scenario of things, No additional data are necessary, due to the fact that the rotational inertia of the disk and its initial angular velocity are known.
The term angular impulse is known to be the output of a torque and the time it took to be equal to the change found in angular momentum of a body that is said to be free to move.
Note that in the above situation, what should be used to determine the angular impulse on the disk is already given and as such, No additional data are necessary, because the rotational inertia of the disk and its initial angular velocity are known.
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What additional data, if any, should a student collect to determine the angular impulse on the disk?
A
The time interval in which the net torque is applied, because a net torque is not exerted on the disk at a single instant in time.
B
The net torque exerted on the disk, because a net torque is responsible for an angular impulse.
C
The force of friction exerted on the disk, because a force component perpendicular to the line connecting the axis of rotation and the point of application of the force results in a torque about that axis.
D
No additional data are necessary, because the rotational inertia of the disk and its initial angular velocity are known.
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