The diagram shows a top view of a child on a merry-go-round that is rotating counterclockwise. Assume the platform rotates without friction. If the child starts to walk towards the center of the merry-go-round … A. What happens to the moment of inertia of the system? B. What happens to the angular velocity of the system?

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.