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## Homework Statement

A penny is placed on an LP record that is slowly accelerating up to 78 revolutions per minute. It is found that if the penny is placed at 0.080m or greater from the center, then the penny slides off the edge of the record. Find the coefficient of static friction if the mass of the penny is 0.0032kg.

## Homework Equations

Ff = mu x n

a = v2/r

## The Attempt at a Solution

I don't know how to start. Can someone guide me please??