Final answer:
When rotating the Launcher platform, CM1 would observe changes in the angular momentum and rotational inertia of the system depending on the movement of the child on the platform.
Step-by-step explanation:
When rotating the Launcher platform, CM1 would observe changes in the angular momentum and rotational inertia of the system depending on the movement of the child on the platform.
If the child moves towards the center of the platform, it would increase the total angular momentum of the system. This is because the child's mass is closer to the axis of rotation, resulting in a smaller moment of inertia and therefore a larger angular momentum.
On the other hand, if the child moves away from the center of the platform, it would decrease the rotational inertia of the system. This is because the child's mass is farther from the axis of rotation, resulting in a larger moment of inertia and therefore a smaller angular momentum.