(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A rubber Eraser is placed on a cardboard record on a turntable. The turntable is set to 33 1/3 rotations per minute. what is the max radius for the eraser to be placed without slipping. but first calculate the coefficient of friction. You will not be given mass or radius of the 'record'

2. Relevant equations

a_{c}=V^{2}/r

a_{c}= 4pi^{2}rf^{2}

u^{s}=Tan [tex]\theta[/tex]

3. The attempt at a solution

no idea as to how to get this...i cant seem to make any connections...

[tex]\mu[/tex]Fn=m x a_{c}

[tex]\mu[/tex]=Tan [tex]\theta[/tex]

Tan [tex]\theta[/tex]=m x a_{c}

Tan [tex]\theta[/tex]= a_{c}/ g

Tan [tex]\theta[/tex]= 4[tex]\pi[/tex]^2rf^2

then acceleration can be either of the centripetal acceleration equations but the n i get totally stuck because i cant get rid of r xD

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# Homework Help: Find the Coefficient of Friction Given Frequency

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