What is an equilibrant? an object that has zero net force acting on it a force that makes the net force on an object zero two chemical reactions proceeding at the same rate in opposite directions a force in the same direction as the net force

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?