The diagram shows a top view of a child of mass M on a circular platform of mass 2M that is rotating counterclockwise. Assume the platform rotates without friction. Which of the following describes an action by the child that will increase the angular speed of the platform-child system and gives the correct reason why?A. The child moves toward the center of the platform, increasing the total angular momentum of the system.B. The child moves toward the center of the platform, decreasing the rotational inertia of the system.C. The child moves away from the center of the platform, increasing the total angular momentum of the system.D. The child moves away from the center of the platform, decreasing the rotational inertia of the system WHAT DO YOU THINK? QUICKCHECK3The diagram shows a top view of a child of mass Mon a circular platform of mass 2M that is rotatingcounterclockwise. Assume the platform rotateswithout friction.Which of the following describes an action by thechild that will increase the angular speed of theplatform-child system and gives the correct reasonwhy?ChildТар ViewA. The child moves toward the center of the platform, increasing the total angularmomentum of the system.B. The child moves toward the center of the platform, decreasing the rotationalinertia of the system.C. The child moves away from the center of the platform, increasing the total angularmomentum of the system.D. The child moves away from the center of the platform, decreasing the rotationalinertia of the system.

Here, we use the formula of the moment of inertia and analyse how the given situation affects the…

The diagram shows a top view of a child of mass M on a circular platform of mass 2M that is rotating counterclockwise. Assume the platform rotates without friction. Which of the following describes an action by the child that will increase the angular speed of the platform-child system and gives the correct reason why? Child Tup View A. The child moves toward the center of the platform, increasing the total angular momentum of the system. B. The child moves toward the center of the platform, decreasing the rotational inertia of the system. C. The child moves away from the center of the platform, increasing the total angular momentum of the system. D. The child moves away from the center of the platform, decreasing the rotational inertia of the system.

The diagram shows a top view of a child of mass M on a circular platform of mass 2M that is rotating counterclockwise. Assume the platform rotates without friction. Which of the following describes an action by the child that will increase the angular speed of the platform-child system and gives the correct reason why? Child Tup View A. The child moves toward the center of the platform, increasing the total angular momentum of the system. B. The child moves toward the center of the platform, decreasing the rotational inertia of the system. C. The child moves away from the center of the platform, increasing the total angular momentum of the system. D. The child moves away from the center of the platform, decreasing the rotational inertia of the system.

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