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## Homework Statement

A car is safely negotiating an unbanked circular turn at a speed of 21 m/s. The maximum static frictional force acts on the tires. Suddenly a wet patch in the road reduces the maximum static frictional force by a factor of three. If the car is to continue safely around the curve, to what speed must the driver slow the car?

## Homework Equations

## The Attempt at a Solution

Do I convert V to angular velocity and figure out the radius? Then ?_?

Do not know how to start, can someone help. Thanks