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## Homework Statement

Hi again ,, my second one is easy:

A tire 0.5 m in radius rotates at a constant rate of 200 rev/min. Find the speed and

acceleration of a small stone stuck on the surface of the tire (on its outer edge).

## Homework Equations

## The Attempt at a Solution

the Speed of the rock is easy to get (W=200 rev/min = (20*pi)/3 rad/s = (10*pi)/3 m/s)

about the acceleration : should I get the tangent acceleration or the radial ??

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