Hey! I'm new here in PF and is wanting to solve this teeny bitsy problem about rotation. I'm at 9th grade and is a newbie at physics. :p(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

Two razor fans, one larger and one smaller, were turned on at the same time and turned off at the same time.

Question: which fan would stop first? the larger one or the smaller one?

2. Relevant equations

I'm thinking of: angular velocity = delta s/ r x delta t

3. The attempt at a solution

I need to prove the answer by using an equation. So the equation must include probably a radius(for the smaller and larger blade) and the time. Problem is, i cant seem to find that and is stumped. But for me, I really think the smaller fan would stop first.

Halp? =(

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# Homework Help: Rotation problem: which would stop first?

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