# A centrifuge accelerates uniformly from rest to 15,000 rpm in 220 s. Through how many revolutions did it turn in this time?

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Oct 20, 2016

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I got:

BUT check my maths!

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We can say that:

[1 revolution is

and 1 min=60 s]

In our case the object changes ANGULAR velocity and goes from

This corresponds to an angular acceleration:

Let us use a (rotational) kinematic relationship to find tha ANGULAR distance

But each revolution corresponds to

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