Question: A vinyl record ( disk ) has a known rotational inertia . The record's initial angular velocity of is in the counterclockwise direction. After an

A vinyl record (disk) has a known rotational inertia. The record's initial angular velocity ofis in the counterclockwise direction. After an unknown time interval, the record comes to rest. An ant is on the record but does not move relative to the record. The ant revolves around the center axle hundreds of times before the record comes to rest. Frictional forces are considered to be constant. You and your friends must determine the angular impulse that frictional forces exert on the record from the moment it rotates with angular velocity in the counterclockwise direction until it stops. What additional data, if any, should a student collect to determine the angular impulse on the disk? Justify your selection.

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