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## Homework Statement

A 25gm mass sits on the surface of a circular disk 10 cm from the center of the disk. The force of static frictio nbetween the mass and surface of the disk is 0.075 N. The disk is initially at rest, but then experiences a constant angular acceleration of 0.80 rad/s^2. How many

**revolutions**will the disk make before the mass starts to slip outward?

## Homework Equations

i'm not exactly sure what equation to use-which is why i'm here...

## The Attempt at a Solution

(

__.80rad__) (

__1 rev__) ....= 1.3rev/s

......5^2......2[tex]\pi[/tex]rad

i dont know ehre to go from here...