Uniform Circular Motion Problem

AI Thread Summary
A car negotiating an unbanked circular turn at 21 m/s experiences a reduction in static friction due to a wet patch, decreasing the frictional force by a factor of three. To determine the new safe speed, the driver must apply the equation for centripetal acceleration, a = v²/r. The discussion emphasizes the importance of attempting to solve the problem independently before seeking assistance. Understanding the principles of circular motion is crucial for finding the solution. The key takeaway is that the driver needs to calculate the reduced speed necessary to maintain safety under the new conditions.
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Homework Statement


1. A car is safely negotiating an unbanked circular turn at 21 m/s and the maximum static force acts on the tires. Suddenly a wet patch on the road reduces the static frictional force by a factor of three. At what speed must the driver slow to in order to safely continue on their journey?

Homework Equations


a=v2/r

The Attempt at a Solution

 
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aki_23 said:

Homework Statement


1. A car is safely negotiating an unbanked circular turn at 21 m/s and the maximum static force acts on the tires. Suddenly a wet patch on the road reduces the static frictional force by a factor of three. At what speed must the driver slow to in order to safely continue on their journey?

Homework Equations


a=v2/r

The Attempt at a Solution


In order for us to help you, you must try to solve the problem yourself and see how far you get. What do you know about circular motion and how can you apply that knowledge in this case?
 

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