A student, sitting on a stool rotating at a rate of 20 RPM, holds masses in each hand When his arms are extended, the total rotational inertia of the system is 4 5 kgm 2 He pulls his arms in close to his body, reducing the total rotational inertia to 1 5 kgm 2 If there are no external torques, what is the new rotational velocity of the system

Question: A student, sitting on a stool rotating at a rate of 20 RPM, holds masses in each hand. When his arms are extended, the total

A student, sitting on a stool rotating at a rate of 20 RPM, holds masses in each hand. When his arms are extended, the total rotational inertia of the system is 4.5 kg·m². He pulls his arms in close to his body, reducing the total rotational inertia to 1.5 kg·m². If there are no external torques, what is the new rotational velocity of the system?

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