Activity 2 A circular merry-go-round has a child standing at its center. The child's parent gives the merry-go-round a push and sets it in motion going counter- clockwise at an angular velocity of w=2.3 radls. The child then starts walking toward the rim of the merrygoround. m IE? Identify the Big Idea(s) and Justication(s) that apply to nding the nal angular speed of the merrygoround when the child reaches the rim. Big ldea(s): 0 Conservation of Angular Momentum Justification(s): . The child moving toward the edge of the merry-go-round does not cause an external torque on the child or the merry-go-round. Calculate the nal angular speed of the merry-goround once the child reaches the rim. Plan: 1. Use conservation of angular momentum to find an expression for the final angular speed of the merry-go-round. 2. Write the moment of inertia of the merry-go-round and child when the child is at the edge of the disk. 3. Solve for the final angular speed