A playground merry-go-round has a mass of 120 kgand a radius of 1.80 m and it is rotating with an angularvelocity of 0.500 rev/s. What is its angular velocity after a22.0-kg child gets onto it by grabbing its outer edge? Thechild is initially at rest.

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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.