Answer:
an increase in the angular speed due to the conservation of angular momentum principle.
Explanation:
From this question, this student has his arms outstretched and he is standing on a platform which is rotating with a constant angular speed.
When his arms are stretched, his moment of inertia I is increased.
Now as This student pulls his arms inwards, His moment of inertia I is going to decrease
Therefore, through the use of the conservation of angular momentum,
there would be an increase in angular speed.
