Answer:
Explanation:
We can use the conservation of the angular momentum.


Now the Inertia is I(professor_stool) plus mR², that is the momentum inertia of a hoop about central axis.
So we will have:

Now, we just need to solve it for ω.

I hope it helps you!
most fossils are found in sedimentary rocks
As per angular momentum conservation we can say

here we know that

we know that




now from above equation



so speed is 4.4 m/s
<span>The correct answer is (63.6, -13.2)
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